kottke.org posts about science
Working from remains discovered during archaeological excavations, sculptor and archaeologist Oscar Nilsson combines his two disciplines to reconstruct the faces of people who lived hundreds, thousands, and even tens of thousands of years ago.
This Neanderthal woman lived 45-50,000 years ago:
This young woman lived in what is now Britain about 5500 years ago. DNA evidence shows that the skin color of the region’s inhabitants at the time was quite dark, akin to that of modern North Africans.
This man was around 20 when he died in northern Switzerland 1300 years ago. His skull was unusual in that it contained a full set of perfect teeth.
You can read more about Nilsson’s restorations at Facebook and National Geographic.
Nilsson’s forensic technique starts with an exact 3D replica of the original skull, scanned, printed, and then modeled by hand to reflect bone structure and tissue thickness based on the individual’s origin, sex, and estimated age at death.
Recent genome studies of ancient European populations enable Nilsson to outfit his reconstructions with reasonably accurate estimates of skin, hair, and eye color. The Neolithic population that the 5,600-year-old Whitehawk woman belonged to, for instance, generally had lighter skin and darker eyes than earlier occupants of Britain such as Cheddar Man, but were darker than the exhibit’s Ditchling Road man, who arrived on the island in the first wave of light-skinned, light-eyed Beaker people from continental Europe around 4,400 years ago.
Using a concept from NASA, a Finnish company called Solar Foods has figured out how to manufacture protein from carbon dioxide, water, and electricity. They call it Solein.
A company from Finland, Solar Foods, is planning to bring to market a new protein powder, Solein, made out of CO2, water and electricity. It’s a high-protein, flour-like ingredient that contains 50 percent protein content, 5-10 percent fat, and 20-25 percent carbs. It reportedly looks and tastes like wheat flour, and could become an ingredient in a wide variety of food products after its initial launch in 2021.
It’s likely to first appear on grocery shelves in protein shakes and yogurt. It could be an exciting development: Solein’s manufacturing process is carbon neutral and the potential for scalability seems unlimited — we’ve got too much CO2, if anything. Why not get rid of some greenhouse gas with a side of fries?
The production of food (and the protein contained in meat in particular) is responsible for a large percentage of our planet’s changing climate, so if Solein pans out, it could be a huge development. It will be interesting to see if the wizards or prophets win the battle to “fix” climate change…Solein is one hell of a salvo by the wizards.
It’s nothing new for people who built tools to later have remorse when seeing those tools abused. Sometimes that remorse is world-historical, like with many of the scientists whose work led to the atom bomb. Sometimes, it’s something less than that, like the guy who built the retweet button for Twitter.
In the retweet button’s case, this guy is named Chris Wetherell. He’s also responsible for leading the team that built Google Reader. This is usually posed as an irony: the guy who built a thing that’s now loathed and everywhere (the retweet) also built the thing that’s beloved after its death. But to me, it’s not so ironic.
See, what Wetherell did in both cases was less invent something from whole cloth than adapt a user behavior (manual retweets and RSS readers) into part of a corporate product. In both case, the corporate versions of each were so successful that they crowded out the original forms of user behavior. The retweet got lucrative but ugly, the RSS reader enabled all new kinds of connections, but grew costly. The retweet lived and Reader died, but the underlying pattern was the same; once it was handed over to the corporation, everyone lost control.
And I think you can argue that there’s a parallel here too with the atom bomb folks. Few of them were upset that the structure of the universe works the way their theories predicted. What terrified them was putting the tremendous power inherent in the structure of the universe at the behest of the state.
This is the builder’s remorse. Not that you invented a thing, not that the consequences were unforeseen. It’s that you gave the thing to a power structure where things were overwhelmingly likely to end in ruin. You gave the power to people who don’t care about what you claim to care about. And that problem, because of the nature and structure of money and power, is extremely hard to avoid.
I was away this weekend at a family function and mostly without internet access, so I didn’t get to watch the coverage of the Moon landing for the first time in more than a decade. I also didn’t get to share a bunch of links I had up in browser tabs and now I think everyone is (justifiably) tired of all the Apollo 11 hoopla, myself included. But I hope you’ll indulge me in just one more and then I’ll (maybe! hopefully!) shut up about it for another year.
It’s tough to narrow it down, but the most dramatic & harrowing part of the whole mission is when Neil Armstrong notices that the landing site the LM (call sign “Eagle”) is heading towards is no good — it’s too rocky and full of craters — so he guides the spacecraft over that area to a better landing spot. He does this despite never having flown the LM that way in training, with program alarms going off, with Mission Control not knowing what he’s doing (he doesn’t have time to tell them), and with very low fuel. Eagle had an estimated 15-20 seconds of fuel left when they touched down and the guy doing the fuel callouts at Mission Control was basically just estimating the remaining fuel in his head based on how much flying he thinks the LM had done…and again, the LM had never been flown like that before and Mission Control didn’t know what Armstrong was up to! (The 13 Minutes to the Moon podcast does an excellent job explaining this bit of the mission, episode 9 in particular.)
Throughout this sequence, there was a camera pointed out Buzz Aldrin’s window — you can see that video here — but that was a slightly different view from Armstrong’s. We’ve never seen what Armstrong saw to cause him to seek out a new landing site. Now, a team at NASA has simulated the view out of his window using data from the Lunar Reconnaissance Orbiter Camera:
The LROC team reconstructed the last three minutes of the landing trajectory (latitude, longitude, orientation, velocity, altitude) using landmark navigation and altitude call outs from the voice recording. From this trajectory information, and high resolution LROC NAC images and topography, we simulated what Armstrong saw in those final minutes as he guided the LM down to the surface of the Moon. As the video begins, Armstrong could see the aim point was on the rocky northeastern flank of West crater (190 meters diameter), causing him to take manual control and fly horizontally, searching for a safe landing spot. At the time, only Armstrong saw the hazard; he was too busy flying the LM to discuss the situation with mission control.
This reconstructed view was actually pretty close to the camera’s view out of Aldrin’s window:
See also a photograph of the Apollo 11 landing site taken by the LRO camera from a height of 15 miles.
The Apollo Flight Journal has put together a 20-minute video of the full descent and landing of the Apollo 11 Lunar Module containing Neil Armstrong and Buzz Aldrin on July 20, 1969.
The video combines data from the onboard computer for altitude and pitch angle, 16mm film that was shot throughout the descent at 6 frames per second. The audio recording is from two sources. The air/ground transmissions are on the left stereo channel and the mission control flight director loop is on the right channel. Subtitles are included to aid comprehension.
Reminder that you can follow along in sync with the entire Apollo 11 mission right up until their splashdown. I am also doing my presentation of Walter Cronkite’s CBS news coverage of the landing and the Moon walk again this year, starting at 4:10pm EDT on Saturday, July 20. Here’s the post I wrote about it last year for more details. (thx, david)
The YouTube channel Primer is running a series on evolution and how it works. Topics include mutations, selfish genes, and altruism in natural selection. The most popular video of the series is this one on the simulation of natural selection:
In it, you can see how different environments cause groups to tend towards certain traits (size, speed, sensing ability) based on food availability, with random mutation and reproduction in the mix as well. Seeing the populations’ traits change in realtime as the generations pass is a powerful way to make sense of a complex concept.
A team of researchers at the Laboratory for NeuroImaging of Coma and Consciousness have done an ultra-high resolution MRI scan of a human brain. The scan took 100 hours to complete and can distinguish objects as small as 0.1 millimeters across.
“We haven’t seen an entire brain like this,” says electrical engineer Priti Balchandani of the Icahn School of Medicine at Mount Sinai in New York City, who was not involved in the study. “It’s definitely unprecedented.”
The scan shows brain structures such as the amygdala in vivid detail, a picture that might lead to a deeper understanding of how subtle changes in anatomy could relate to disorders such as post-traumatic stress disorder.
This video above shows the scanned slices of the entire brain from side to side.
You can view/download the entire dataset of images here.
The folks behind the Nevertheless podcast commissioned a set of seven posters of STEM role models, people who have made significant contributions to science, technology, engineering, and mathematics. The posters are free to download and print out in eight different languages (including English, Spanish, and Simplified Chinese).
Using temperature data from around the world, climate scientist Ed Hawkins has built a tool for viewing the “climate stripes” for almost any location, a data visualization that represents the change in temperature over time over the past 100+ years. For most locations, the graphs shift from blues to oranges & reds as the climate warms, neatly illustrated by the global graph:
Here’s Vermont (where I live) and Arizona:
You can see there’s more variation on the regional level than globally. Check out the graph for Mississippi:
The warming patterns for particular regions are not going to be uniform…some places are actually forecast to get cooler and wetter rather than hotter and dryer. You can create and download your own climate stripes here…perhaps you can use it to make a global warming blanket. (via riondotnu)
From National Geographic comes The Atlas of Moons, an interactive reference to all of the major moons in our solar system, from the Earth’s own moon to the Galilean moons of Jupiter to Charon, which forms a binary system with Pluto.
For whatever reason, I wasn’t fully aware that some of Jupiter’s and Saturn’s major moons orbited their planets so quickly — Europa takes 3.6 days to complete an orbit, Io once every 1.8 days, and Mimas speeds around Saturn every 22.6 hours.
According this video by Kurzgesagt (and their extensive list of sources), the answer to that question for now is: no, our electronic devices are not causing long- or short-term health problems in the brains or bodies of people who use them.
Electrosmog is one of those things that is a bit vague and hard to grasp. When personal health is involved, feelings clash extra hard with scientific facts and there is a lot of misinformation and exaggeration out there. On the other hand, some people are really worried and distressed by the electricity that surrounds them. And just to wave this off is not kind or helpful.
While there is still a lot of researching being done on the dangers of constant weak electromagnetic radiation, it is important to stress that so far, we have no reason to believe that our devices harm us. Other than… well… spending too much time with them.
Remember how last week I told you about Eleanor Lutz’s An Atlas of Space?
Over the past year and a half I’ve been working on a collection of ten maps on planets, moons, and outer space. To name a few, I’ve made an animated map of the seasons on Earth, a map of Mars geology, and a map of everything in the solar system bigger than 10km.
Well, she’s posted her first two projects: An Orbit Map of the Solar System (a map of more than 18,000 asteroid orbits in the solar system) and A Topographic Map of Mercury.
As promised, Lutz has posted the source code for each project to her GitHub account: Mercury topography, asteroid orbits. What a great resource for aspiring data visualization designers. Stay tuned to her site, Twitter, or Tumblr for upcoming installments of the atlas.
Update: Lutz’s third map in the series is out: The Geology of Mars. And here’s the link to the code and how-to on Github.
Update: Lutz’s fourth map has been released: an animated map of the Earth cycling through all four seasons. Link to the code on GitHub.
Also, she’s made high-res wallpapers available for download in a number of different aspect ratios…check out the links at the bottom of the post.
Update: Today’s installment of the atlas presents a view from our solar system: The Western Constellations (source code on Github).
This week’s map shows every single star visible from Earth, on the darkest night with the clearest sky. The map also includes all of the brightest galaxies, nebulae, and star clusters from W.H. Finlay’s Concise Catalog of Deep-sky Objects. I illustrated the familiar Western star patterns — or asterisms — in blue and gold, as well as the scientific constellation boundaries in red.
Update: Holy moly, I think Lutz’s Topographic Map of Mars might be her most beautiful one yet.
Update: I couldn’t keep up with all of Lutz’s additions to her atlas. You can check out all of the installments in the archive, including the last part (for now), The Geology of the Moon.
Well, this is just flat-out fantastic. Ben Feist and a team of collaborators have built Apollo 11 In Real Time, an interactive presentation of the first mission to land on the Moon as it happened.
This website replays the Apollo 11 mission as it happened, 50 years ago. It consists entirely of historical material, all timed to Ground Elapsed Time — the master mission clock. Footage of Mission Control, film shot by the astronauts, and television broadcasts transmitted from space and the surface of the Moon, have been painstakingly placed to the very moments they were shot during the mission, as has every photograph taken, and every word spoken.
You can tune in in real time beginning July 16th, watch/experience it right now from 1 minute before launch, or you can skip around the timeline to just watch the moments you want. As someone who has been hosting an Apollo 11 in real time thing for the past 9 years, this site makes me both ridiculously happy and a little bit jealous.
I’ve only ever seen footage of the first moonwalk in grainy videos as broadcast on TV, but this site shows it in the original resolution and it’s a revelation. Here’s the moonwalk, beginning with some footage of the folks in Mission Control nervously fidgeting with their hands (skip to 5:18:00 if the video doesn’t start there):
The rest of the video for the entire mission can be found here…what a trove. This whole thing is marvelous…I can’t wait to tune in when July 16th rolls around.
Eleanor Lutz is one of my favorite data visualizers (previously) and she’s about ready to drop her new project: An Atlas of Space.
I’m excited to finally share a new design project this week! Over the past year and a half I’ve been working on a collection of ten maps on planets, moons, and outer space. To name a few, I’ve made an animated map of the seasons on Earth, a map of Mars geology, and a map of everything in the solar system bigger than 10km.
Over the next few weeks I want to share each map alongside the open-source Python code and detailed tutorials for recreating the design. All of the astronomy data comes from publicly available sources like NASA and the USGS, so I thought this would be the perfect project for writing design tutorials (which I’ve been meaning to do for a while).
Ahhh, look at those colors! Lutz is going to be posting a new map from the project periodically over the next few weeks so follow her on Tabletop Whale, Twitter, or Tumblr to tune in.
Update: I’m keeping track of the projects that make up the atlas as they are released in updates to this post.
The results of recently analyzed find from the Green River Formation in the western US were published yesterday show the fossilized remains of an entire school of 257 fish. Beyond the fact that a whole school of fish was somehow frozen in time together 50 million years ago, what’s so remarkable is this discovery provides evidence of the social behavior of a now-extinct animal.
We found traces of two rules for social interaction similar to those used by extant fishes: repulsion from close individuals and attraction towards neighbours at a distance. Moreover, the fossilized fish showed group-level structures in the form of oblong shape and high polarization, both of which we successfully reproduced in simulations incorporating the inferred behavioural rules. Although it remains unclear how the fish shoal’s structure was preserved in the fossil, these findings suggest that fishes have been forming shoals by combining sets of simple behavioural rules since at least the Eocene. Our study highlights the possibility of exploring the social communication of extinct animals, which has been thought to leave no fossil record.
Read more about the analysis in Science News.
The story goes that modern chaos theory was birthed by Edward Lorenz’s paper about his experiments with weather simulation on a computer. The computing power helped Lorenz nail down hidden patterns that had been hinted at by computer-less researchers for decades. But the early tenets of chaos theory were not the only things that were hidden. The women who wrote the programs that enabled Lorenz’s breakthroughs haven’t received their proper due.
But in fact, Lorenz was not the one running the machine. There’s another story, one that has gone untold for half a century. A year and a half ago, an MIT scientist happened across a name he had never heard before and started to investigate. The trail he ended up following took him into the MIT archives, through the stacks of the Library of Congress, and across three states and five decades to find information about the women who, today, would have been listed as co-authors on that seminal paper. And that material, shared with Quanta, provides a fuller, fairer account of the birth of chaos.
The two women who programmed the computer for Lorenz were Ellen Gille (née Fetter) and Margaret Hamilton. Yes, that Margaret Hamilton, whose already impressive career starts to look downright bonkers when you add in her contributions to chaos theory.
In 1960, David Latimer put some compost, water, and plant seeds into a large glass jar and sealed it up. And it’s been growing like that ever since, save for when Latimer opened the bottle to water it in 1972.
It’s easy to take nature and evolution for granted but think about how marvelous this is. Over billions of years, an ecosystem evolved on Earth that can sustain itself basically forever using light from the Sun.
The plant creates energy from the sunlight via photosynthesis, using up carbon dioxide and releasing oxygen into the bottle. When parts of the plant die, bacteria in the soil use the oxygen to break down these dead parts, releasing carbon dioxide and completing the circle. The water cycle is similarly self-refueling: whatever water the plant takes in through its roots ultimately transpires out of its leaves, condenses on the inside of the bottle, and drips back into the soil.
Many species of migratory birds, like the Canada goose in North America, fly in a v-formation. Scientists have long suspected that there was some energy-saving advantage to flying in formation and a 2014 study provides evidence to that effect.
By comparing the birds’ flight data to computer simulations, Portugal found that the ibises are apparently drafting — catching an uprush of air from the wingtip of the bird ahead. “Furthermore, when they’re in that position, they time wing beats perfectly,” he says. “So they don’t just sit there passively hoping to get some of the good air from the bird in front.”
They actually flap along the perfect sweet spot. Portugal thinks there’s a very good reason why the ibises do this. Previous studies have shown that flying is hard work.
“When we get exercising, our heart rate gets up to around 180 beats per minute on a good day,” Portugal says. “When birds are flying, it goes up to 400 beats per minute.”
You can read the paper published by the researchers in Nature. (via the kid should see this)
Judith Love Cohen was, at various times in her fascinating life, an engineer who worked on the Pioneer, Apollo, and Hubble missions, an author & publisher of books about women in STEM and environmentalism in the 90s, a ballet dancer with the New York Metropolitan Opera Ballet Company, an advocate for better treatment of women in the workplace, and actor Jack Black’s mother. From an obituary written by her son Neil Siegel after her death in 2016:
My mother usually considered her work on the Apollo program to be the highlight of her career. When disaster struck the Apollo 13 mission, it was the Abort-Guidance System that brought the astronauts home safely. Judy was there when the Apollo 13 astronauts paid a “thank you” [visit] to the TRW facility in Redondo Beach.
She finished her engineering career running the systems engineering for the science ground facility of the Hubble Space Telescope.
During her engineering career, she was a vigorous and tireless advocate of better treatment for women in the workplace. Many things that today we consider routine — the posting of job openings inside of a company so that anyone could apply, formal job descriptions for every position, and so forth - were her creations. She had a profound impact on equality in the workforce.
Here’s Cohen pictured with an early Pioneer spacecraft in 1959:
Frustrated with the lack of female role models for girls interested in science, math, and technology, she retired from engineering to write and publish a series of books. From a 1999 LA Times profile:
The 11-book series features female professionals such as a paleontologist, Egyptologist and marine biologist. Cohen’s first book in 1991, “You Can Be a Woman Engineer,” traces her arc from a girl who had never heard of female engineers to a woman who led a team of engineers on the design for NASA’s Hubble Space Telescope.
“You only think about things when you see people doing it. Most girls know now they can be lawyers” from TV shows like “Ally McBeal” and female lawyers in the news, Cohen said. “They know that they can work in an emergency room — they’ve seen ‘ER.’ But I don’t recall that anyone has seen scientists on a large scale, except for a few paleontologists in ‘Jurassic Park.’”
At NASA’s Jet Propulsion Laboratory in Pasadena, physicist Barbara Wilson, 50, said she never knew of any female scientists while growing up in the Midwest. At age 10, she started reading science fiction books for inspiration, but none of them featured women. In school, counselors dismissed the idea of her becoming a scientist, saying she should consider jobs that “women are more likely to be good at.” Books like Cohen’s would have provided the validation she sought, said Wilson, JPL’s chief technologist.
“It was really difficult psychologically and emotionally to be better than all the boys in math and science,” she said. “[The books] really would have helped encourage my feeling good about myself, that this was the direction I wanted to go. I didn’t see role models. I didn’t get encouragement other than at home.”
It’s difficult to imagine a better role model than Cohen…she obviously loved engineering and her work. When her son Jack Black was born, she barely hit the pause button:
Her fourth child, Jack, was born a few years later. She actually went to her office on the day that Jack was born. When it was time to go to the hospital, she took with her a computer printout of the problem she was working on. Later that day, she called her boss and told him that she had solved the problem. And… oh, yes, the baby was born, too.
If anyone from the NY Times is reading, I think Cohen would make a good subject for the Overlooked series. (via history cool kids)
Update: Jack Black and Neil Siegel recently went on the Periodic Talks podcast to talk about their mother and her career at NASA.
The development of vaccines against infectious diseases is among the greatest of human accomplishments and has saved ten of millions of people from dying. And yet some are still hung up on their side effects (and also the widely disproved and debunked fraudulent claim that vaccines cause autism). In this video, Kurzgesagt looks at how vaccines work and compares the impact of their side effects (minuscule) to the potential effect of the diseases they protect against (children dying).
The extensive list of sources they used for the video can be found here.
The title of this video is “The Side Effects of Vaccines - How High is the Risk?”, which seems like it’s maximized for clicks and to spread amongst anti-vaxxers on social media. I wish it had a more accurate title — something like “The Absurdly Low Risk of Vaccine Side Effects” or maybe “Vaccines. And Now My Kids Don’t Die.” — but perhaps positioning it this way is a good strategy to get folks who may not be quite so radicalized to watch it.
According to a poll conducted by NPR/Ipsos, over 80% of American parents want climate change to be taught in our schools, but only 42% of the teachers polled say that they teach it in their classrooms.
If they don’t hear about it at home, will kids learn about climate change in school? To answer this question, NPR/Ipsos also completed a nationally representative survey of around 500 teachers. These educators were even more likely than the general public to believe in climate change and to support teaching climate change.
In fact, 86% of teachers believe climate change should be taught in schools. In theory.
But in practice, it’s more complicated. More than half — 55% — of teachers we surveyed said they do not cover climate change in their own classrooms or even talk to their students about it.
The most common reason given? Nearly two-thirds (65%) said it’s outside their subject area.
NPR education correspondent Anya Kamenetz shared 8 Ways To Teach Climate Change In Almost Any Classroom, regardless of what subject you teach.
5. Assign a research project, multimedia presentation or speech.
Gay Collins teaches public speaking at Waterford High School in Waterford, Conn. She is interested in “civil discourse” as a tool for problem-solving, so she encourages her students “to shape their speeches around critical topics, like the use of plastics, minimalism, and other environmental issues.
I am, however, still hung up on the 12% of teachers polled who said that the world’s climate is not changing.
In this short clip from 1983, legendary computer scientist Grace Hopper uses a short length of wire to explain what a nanosecond is.
Now what I wanted when I asked for a nanosecond was: I wanted a piece of wire which would represent the maximum
distance that electricity could travel in a billionth of a second. Now of course it wouldn’t really be through wire — it’d be out in space, the velocity of light. So if we start with a velocity of light and use your friendly computer, you’ll discover that a nanosecond is 11.8 inches long, the maximum limiting distance that electricity can travel in a billionth of a second.
You can watch the entirety of a similar lecture Hopper gave at MIT in 1985, in which she “practically invents computer science at the chalkboard”. (via tmn)
At the Salk Institute for Biological Studies, Dr. Joanne Chory is working on a project to create plants capable of storing more carbon for a longer period of time than normal plants in order to help mitigate the effects of climate change.
Suberin — also known as cork — is a naturally occurring carbon-rich substance found in plant roots. It absorbs carbon yet resists decomposition (which releases carbon back into the atmosphere), enriches soil and helps plants resist stress.
By understanding and improving just a few genetic pathways in plants, Salk’s plant biologists believe they can help plants grow bigger, more robust root systems that absorb larger amounts of carbon, burying it in the ground in the form of suberin.
The Salk team will use cutting-edge genetic and genomic techniques to develop these Salk Ideal Plants.
According to this piece in the Guardian on the project, one of the techniques they’re using is CRISPR, basically a genetic copy/paste system. Once the team demonstrates they can grow these larger root systems in model plants, they’ll genetically transfer that capability to the world’s largest food crops like rice, wheat, and corn.
As a bonus, the team believes that Ideal Plants will have other positive effects:
In addition to mitigating climate change, the enhanced root systems will help protect plants from stresses caused by climate changes and the additional carbon in the soil will make the soil richer, promoting better crop yields and more food for a growing global population.
This project is firmly on the wizard end of the wizards vs prophets spectrum.
Nuclear physicists hypothesize that when the cores of neutron stars are subject to enough pressure, the quarks that make up the core can turn from up and down quark varieties into strange quarks. As this Kurzgesagt video explains, this strange matter is particularly stable and if it were to escape from the core of the neutron star, it would convert any ordinary matter it came into contact with to more strange matter. If you hadn’t heard about this hypothesis before, you can read up on it in their list of sources for the video.
Ok, this is pretty cool. We have the first photo of a supermassive black hole, from imagery taken two years ago of the elliptical galaxy M87 (in the constellation Virgo) by the Event Horizon Telescope project. The EHT team is a group of 200 scientist that has been working on this project for two decades. The image was created using data captured from radio telescopes from Hawaii to the South Pole and beyond using very long baseline interferometry.
The image, of a lopsided ring of light surrounding a dark circle deep in the heart of the galaxy known as Messier 87, some 55 million light-years away from here, resembled the Eye of Sauron, a reminder yet again of the power and malevolence of nature. It is a smoke ring framing a one-way portal to eternity.
Now is a good time to (re)read Jonathan Lethem’s early novel, the absurdist physics love story As She Climbed Across the Table.
Update: Vox’s Joss Fong has a good 6-minute video that explains how the photo was taken:
And this video by Veritasium is even more meaty (and this one too):
In this week’s New Yorker, Rachel Aviv looks at why it’s so hard to go off psychiatric drugs, and why they may often be overprescribed. She tells the story of Laura Delano, a descendant of Franklin Delano Roosevelt from Greenwich, CT.
Laura received a bipolar diagnosis as a teen and was medicated for several conditions and a cascade of associated symptoms. She assumed her depression was due to a chemical imbalance being corrected by the cocktail of psychotropic drugs used longterm. Her decades-long cycle through different drugs, diagnoses, and symptoms show an under-discussed side of psychopharmacology.
Dorian Deshauer, a psychiatrist and historian at the University of Toronto, has written that the chemical-imbalance theory, popularized in the eighties and nineties, “created the perception that the long term, even life-long use of psychiatric drugs made sense as a logical step.” But psychiatric drugs are brought to market in clinical trials that typically last less than twelve weeks. Few studies follow patients who take the medications for more than a year. Allen Frances, an emeritus professor of psychiatry at Duke, who chaired the task force for the fourth edition of the DSM, in 1994, told me that the field has neglected questions about how to take patients off drugs—a practice known as “de-prescribing.” He said that “de-prescribing requires a great deal more skill, time, commitment, and knowledge of the patient than prescribing does.” He emphasizes what he called a “cruel paradox: there’s a large population on the severe end of the spectrum who really need the medicine” and either don’t have access to treatment or avoid it because it is stigmatized in their community. At the same time, many others are “being overprescribed and then stay on the medications for years.” There are almost no studies on how or when to go off psychiatric medications, a situation that has created what he calls a “national public-health experiment.”
Aviv makes an apt observation about our culture and willingness to confront mental health:
Overprescribing isn’t always due to negligence; it may also be that pills are the only form of help that some people are willing to accept.
But back to Laura. In 2010, after years of cycling through diagnoses (most recently borderline personality disorder), psychiatrists, pharmacologists, and prescriptions, she came across what would turn out to be a life-altering discovery in a bookstore.
On the table of new releases was “Anatomy of an Epidemic,” by Robert Whitaker, whose cover had a drawing of a person’s head labelled with the names of several medications that she’d taken. The book tries to make sense of the fact that, as psychopharmacology has become more sophisticated and accessible, the number of Americans disabled by mental illness has risen. Whitaker argues that psychiatric medications, taken in heavy doses over the course of a lifetime, may be turning some episodic disorders into chronic disabilities. (The book has been praised for presenting a hypothesis of potential importance, and criticized for overstating evidence and adopting a crusading tone.)
Not only did this alter the course of Laura’s treatment, but her life’s work as well. Last year, she helped launched the online resource the Withdrawal Project after years of both informal and formal counseling of others.
But what’s next for our brain health? Some health experts say probiotics and our microbiome should not be ignored.
It’s only Monday, but I’m confident this will be my favorite read of the week. Since 2012, paleontologist Robert DePalma has been excavating a site in North Dakota that he thinks is “an incredible and unprecedented discovery”. What’s potentially so special about this site? Fossils from dinosaurs and other animals from thousands of years before the asteroid impact are very hard to come by, leading some to believe that dinosaurs died out before the impact, not because of it. DePalma believes the site preserves, as if in amber, the day, the precise and exact day (and perhaps even the exact hour), that the massive asteroid believed to have caused the extinction of the dinosaurs hit the Earth 65 million years ago.
As DePalma carefully excavated the upper layers, he began uncovering an extraordinary array of fossils, exceedingly delicate but marvellously well preserved. “There’s amazing plant material in there, all interlaced and interlocked,” he recalled. “There are logjams of wood, fish pressed against cypress — tree root bundles, tree trunks smeared with amber.” Most fossils end up being squashed flat by the pressure of the overlying stone, but here everything was three-dimensional, including the fish, having been encased in sediment all at once, which acted as a support. “You see skin, you see dorsal fins literally sticking straight up in the sediments, species new to science,” he said. As he dug, the momentousness of what he had come across slowly dawned on him. If the site was what he hoped, he had made the most important paleontological discovery of the new century.
The type of evidence present at the site is almost too good to believe:
He noted that every fish he’d found in the site had died with its mouth open, which may indicate that the fish had been gasping as they suffocated in the sediment-laden water.
“Most died in a vertical position in the sediment, didn’t even tip over on their sides,” he said. “And they weren’t scavenged, because whatever would have dug them up afterward was probably gone.”
Clues from the growth stages of animals and pollen found at the site might even point to what season it was when the asteroid struck…DePalma’s current guess is in autumn. And then there’s this, about a burrow that DePalma discovered:
“Any Cretaceous mammal burrow is incredibly rare,” he said. “But this one is impossible — it’s dug right through the KT boundary.” Perhaps, he said, the mammal survived the impact and the flood, burrowed into the mud to escape the freezing darkness, then died. “It may have been born in the Cretaceous and died in the Paleocene,” he said.
A scientific paper is forthcoming this week. I couldn’t find it online, but this piece in Science says that it’s generating some discussion and controversy already.
“Outcrops like [this] are the reasons many of us are drawn to geology,” says David Kring, a geologist at the Lunar and Planetary Institute in Houston, Texas, who wasn’t a member of the research team. “Those few meters of rock record the wrath of the Chicxulub impact and the devastation it caused.” But not everyone has fully embraced the find, perhaps in part because it was first announced to the world last week in an article in The New Yorker. The paper, in the Proceedings of the National Academy of Sciences (PNAS), does not include all the scientific claims mentioned in The New Yorker story, including that numerous dinosaurs as well as fish were buried at the site.
“I hope this is all legit-I’m just not 100% convinced yet,” says Thomas Tobin, a geologist at the University of Alabama in Tuscaloosa. Tobin says the PNAS paper is densely packed with detail from paleontology, sedimentology, geochemistry, and more. “No one is an expert on all of those subjects,” he says, so it’s going to take a few months for the research community to digest the findings and evaluate whether they support such extraordinary conclusions.
I’m eager to follow the progress of this story as more of the results are released and analyzed by the scientific community.
Update: The BBC has made a documentary narrated by David Attenborough about the Tanis site and the discoveries that have been made there so far. There’s evidence that they’ve discovered fragments of the actual asteroid impactor.
The sturgeon and paddlefish in this fossil tangle are key. They have small particles stuck in their gills. These are the spherules of molten rock kicked out from the impact that then fell back across the planet. The fish would have breathed in the particles as they entered the river.
The spherules have been linked chemically and by radiometric dating to the Mexican impact location, and in two of the particles recovered from preserved tree resin there are also tiny inclusions that imply an extra-terrestrial origin.
“When we noticed there were inclusions within these little glass spherules, we chemically analysed them at the Diamond X-ray synchrotron near Oxford,” explains Prof Phil Manning, who is Mr DePalma’s PhD supervisor at Manchester.
“We were able to pull apart the chemistry and identify the composition of that material. All the evidence, all of the chemical data, from that study suggests strongly that we’re looking at a piece of the impactor; of the asteroid that ended it for the dinosaurs.”
The program will air on BBC on April 15 and sometime later this year on PBS.
John Boswell has made a 10-minute time lapse video showing the history of the universe, from its formation 13.8 billion years ago up to the present. Each second of the video represents the passing of 22 million years. But don’t blink right near the end…you might miss the tiny fraction of a second that represents the entire history of humanity.
See also: Boswell’s Timelapse of the Future, a dramatized time lapse of possible events from now until the heat death of the universe many trillion trillion trillions of years from now.
Gizmodo’s Daniel Kolitz recently asked a panel of anatomists and evolutionary biologists about what the most useless part of the human body might be. Biology professor Dr. Nathan Lents reminds us that our bodies contain ample evidence of our design by evolution:
It’s hard to pick just one! The human wrist is a clunky hodgepodge of unnecessary bones. If we could design that joint from scratch, there is no way we would stick eight small, fixed, and mostly useless bones in there. We also have the stump of a tail that we could totally do without. It does nothing for us except occasionally gets injured or develops cancer.
I think my favorite useless body part is the pyramidalis muscle, which is located in our pelvic floor and attaches to the pelvis and some other connective tissue in our nether regions. What does it do? Well, when you flex this muscle, you can sort of squish the tissue in that area around pointlessly, but in monkeys and other mammals, it helps to manipulate the tail. So useless is this muscle that at least 20% of us don’t even have one and we don’t even miss it. I always enjoy telling people that, although humans and other apes don’t have tails, we still have the muscles to flex them!
One of my favorite Wikipedia articles is the timeline of the far future, which details the predictions science makes about the possible futures of the Earth, solar system, galaxy, and universe, from Antares exploding in a supernova visible from Earth in broad daylight in 10,000 years to the end of star formation in galaxies 1 trillion years from now…and beyond.
In his new video, Timelapse of the Future, John Boswell takes us on a trip through that timeline, a journey to the end of time.
We start in 2019 and travel exponentially through time, witnessing the future of Earth, the death of the sun, the end of all stars, proton decay, zombie galaxies, possible future civilizations, exploding black holes, the effects of dark energy, alternate universes, the final fate of the cosmos — to name a few.
A regular time lapse of that voyage would take forever, so Boswell cleverly doubles the pace every 5 seconds, so that just after 4 minutes into the video, a trillion years passes in just a second or two.1 You’d think that after the Earth is devoured by the Sun about 3 minutes in, things would get a bit boring and you could stop watching, but then you’d miss zombie white dwarfs roaming the universe in the degenerate era, the black hole mergers era 1000 trillion trillion trillion trillion years from now, the possible creation of baby “life boat” universes, and the point at which “nothing happens and it keeps not happening forever”.
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