Math and science-themed tattoos
Math and science-themed tattoos. More info here. (via random foo)
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Radiolab has been getting some love from
Radiolab has been getting some love from quite a few of the sites I read (Snarkmarket originally turned me on to the show), so I thought I’d offer mine as well. I don’t listen to the radio or to podcasts, but lately I’ve made an exception for Radiolab. It’s about science, the editing is wonderful and unique, Jad Abumrad is one of the best radio voices I’ve ever heard, and to top it off, their shows are really fascinating.
Their show on Memory and Forgetting from last June is particularly good. If you don’t have time for the whole thing, the Adding Memory (especially Joe Andoe’s story) and Clive segments are almost must-listens.
You can listen to Radiolab on their site, on a variety of US radio stations, as a podcast, or though iTunes.
Update: Radiolab did a session at the Apple Store in Soho about their editing process and thought process. (thx, dan)
A recent study shows that the human
The experimenters used functional magnetic resonance imaging (fMRI) to scan the brains of Harvard and other Boston-area students while showing them pictures of other college-age people whom the researchers randomly described as either liberal northeastern students or conservative Midwest fundamentalist Christian students.
The study concludes that the secret to getting along with someone that you perceive as an outsider is to find some common ground so that your brain will accept them as someone with similar circumstances.
This is not new advice. Yet it is heartening to see that it is firmly grounded in distinct patterns of neural activity. There may be a brain basis for reacting with prejudices for those that seem different. But there’s also a brain basis for overriding those differences and seeing outsiders as more like us.
David Galbraith expands upon what this means for society at large:
In other words, a civilized society depends not on the people who are currently the most civilized, but those who are most willing to accept change, as social or cultural groupings change, split or coalesce. Inevitably this means reasonable people rather than faithful people.
Several very cool animations, graphs, and photos
Several very cool animations, graphs, and photos of Northern Hemisphere sea ice coverage are available from The Cryosphere Today. Among them: ice coverage time-lapse from 1978-2006 and 2007’s ice retreat (the greatest ever recorded). (via ben saunders)
Doctors and researchers are investigating the source
Doctors and researchers are investigating the source of a new disease caused by aerosolized pig brains.
Their working hypothesis is that the harvesting technique — known as “blowing brains” on the floor — produces aerosols of brain matter. Once inhaled, the material prompts the immune system to produce antibodies that attack the pig brain compounds, but apparently also attack the body’s own nerve tissue because it is so similar.
(via frontal cortex)
Mythbusters, airplane on a conveyor belt
Starting in about 40 minutes, I’ll be liveblogging the Mythbusters episode where they take on the infamous airplane on a conveyor belt problem. Updates will be reverse chronological (newest at the top) so don’t scroll down if you’re DVRing the episode for later viewing or otherwise don’t want anything spoiled.
Fair warning? Ok here we go.
10:32p I’ve turned comments on. Why not!!
10:04p
The plane took off so easily. The laws of physics are proven correct once again. But I’m not sure this is going to settle anything. I’m getting email as we speak that the test was unfair. Plane was too light. Tarp was pulled too slowly. Etc. But the thing is, it doesn’t matter how large the plane is…given enough runway and a strong enough conveyor belt, it will still take off. Ditto for the speed of the treadmill…it doesn’t matter how fast the treadmill is moving. It could be going 300 mph in the opposite direction and as long as the bearings in the plane’s wheels don’t melt, it’s gonna take off. (For an explanation, try this one by my friend Mouser, who has a MIT Ph.D in Physics Sc.D. in Nuclear Science and Engineering.)
9:58p
Update: Due to popular demand, the above graphic is available on a t-shirt at CafePress. Prices start at $18 and they’re available in men’s and women’s sizes.
9:58p
Heeeeeeeere we go.
9:56p
The pilot flying the ultralight is predicting that he won’t be able to take off.
9:55p
Orville Wright died 60 years ago today.
9:50p
Cockroach mini-myth: cockroaches would survive a nuclear blast longer than humans but there were other kinds of bugs that fared better. Another commercial.
9:47p
Back to the shaving cream in the car prank. Now they’re going to use A-B foam…they’re trying to fill all the space in the car and perhaps explode it. Totally worked.
9:44p
Expedia commercial. Nice synergistic placement. Good work, Discovery Channel’s ad sales team.
9:43p
Ok, to do the large-scale plane test, they’re using a 2000 foot tarp and a 400 pound ultralight. Tarp is pulled in one direction and the plane tries to take off in the other direction. The wind is picking up and blowing the tarp runway all over the place. They’re also having problems with punching holes in the tarp. They’re going to try again after we hear some more about radioactive cockroaches. Aaaand, another commercial.
9:36p
Second mini-myth: if you freeze a can of shaving cream, cut it open, and then put the foam in a car, it will heat and expand to fill the car. One can did almost nothing. 50 cans didn’t do too much either.
9:32p
Off to commercial again. Macbook Air ad. I don’t understand all the whining about how expensive and underpowered it is. You can’t get by with an 80 GB hard drive? Come on.
9:30p
Now a bit of explanation from the boys. (Things are moving faster now, which is welcome.) The thrust from the airplane acts upon the air so it doesn’t matter too much what the runway is doing to the plane’s wheels. And then back to the roach thing. They irradiated them (and some other bugs) and most of the roaches died. Still pending…
9:25p
Ok, they’re dragging paper behind a Segway and trying to take off with the model airplane in the opposite direction. IT JUST TOOK OFF.
9:19p
Back to the roach thing. More recapping and a little bit more setup. I don’t see how people can watch this show…it’s sooooo slooooow. And now another commercial break. Hello picture-in-picture.
9:18p
As expected, the model airplane “flew” off the end of the exercise treadmill. It didn’t have enough room to take off, but if it stayed straight, it probably would have.
9:14p
First recap…they took a solid minute to explain what they’ve already done. Ugh.
9:13p
Going into the first commercial, we’ve caught a glimpse of how they’re going to test the main myth. They’re going to drag a huge plastic sheet long the ground and have the plane sit on the plastic and being going the other way attempting to take off. A reasonable substitute for the treadmill.
9:08p
They’re starting off small with a model airplane on an exercise treadmill. They’re showing the two hosts learning how to fly the tiny airplane. One of them is riding around on a Segway. Oh, and they’re also doing two other mini-myths during the episode. They just switched gears to the first mini-myth: can a cockroach survive a nuclear blast?
9:04p
And we’re off. They’re calling it “the moment we’ve all been waiting for”. My guess: the plane will take off.
8:58p
I’ve only watched one other episode of Mythbusters before today. I found the show to be a little slow and very repetitive; 8 minutes of material stretched into 45 minutes of show. Unfortunately, this practice seems to be common among science programs on television.
8:40p
Watching Family Guy as a warmup. The one with the nudist family. Good stuff.
8:22p
Preemptive answer for the inevitable “Do you realize how boring/stupid/goofy it is to liveblog this?” Most definitely.
Noted food scientist Harold McGee takes a
Noted food scientist Harold McGee takes a look at the microbiological consequences of double dipping a chip into a bowl of dip.
Prof. Paul L. Dawson, a food microbiologist, proposed it after he saw a rerun of a 1993 “Seinfeld” show in which George Costanza is confronted at a funeral reception by Timmy, his girlfriend’s brother, after dipping the same chip twice.
The Earth without people
What would happen to planet earth if the human race were to suddenly disappear forever? Would ecosystems thrive? What remnants of our industrialized world would survive? What would crumble fastest? From the ruins of ancient civilizations to present day cities devastated by natural disasters, history gives us clues to these questions and many more.
The upshot of Life After People is that, with the exception of some domesticated animals, our planet would be better off without us. Waaaay better off. Like if Mother Nature sat us down for a talk and said, “listen, you’re really shitting on the rest of the planet, its residents, its ecosystems, etc. and, by the way, you’re killing me slowly and painfully” and the only honorable thing to do would be to jump in a rocketship to colonize Mars or commit mass suicide so everything else could live in peace.
The other interesting thing about the show is how little is left of humans after a few thousand years of absence. Roads, buildings, cars, bridges; they all break down. Ashes to ashes, dust to dust. The Great Pyramid at Giza might still be around in another ten thousand years, but it may be covered in sand. The Great Wall of China and Hoover Dam could survive for awhile longer. Mount Rushmore, caved out of solid granite, may last for 200,000 years or more. They didn’t mention anything about cut & diamonds or objects made from platimun or titanium, but I imagine that they would last millions of years, if not practically forever.
Which leads you to wonder: if the Earth supported an advanced civilization that died out over 500,000 years ago, would we have any way of knowing they even existed? Small cut gemstones and platinum artifacts left behind by such a civilization would be difficult to discover unless they were of sufficient size. Fossils would certainly survive in some form and we could perhaps make some guesses as to their intelligence based on morphology. Would that be enough to detect them?
Update: Two other possible advanced civilization detectors: chemical and geological changes caused might show up in mineral layers and long-lasting nuclear waste. (thx, jordan & leonard)
For real this time: Mythbusters will air
For real this time: Mythbusters will air their challenge of the airplane on a conveyor belt puzzle this Wednesday at 9pm ET. (thx, darin)
Observation effects
A recent study shows that when Tiger Woods plays in a golf tournament, the other players perform worse than they do when he doesn’t play.
Analyzing data from round-by-round scores from all PGA tournaments between 2002 and 2006 (over 20,000 player-rounds of golf), Brown finds that competitors fare less well — about an extra stroke per tournament — when Tiger is playing. How can we be sure this is because of Tiger? A few features of the findings lend them plausibility. The effect is stronger for the better, “exempt” players than for the nonexempt players, who have almost no chance of beating Tiger anyway. (Tiger’s presence doesn’t mean much to you if the best you can reasonably expect to finish is about 35th-there’s not much difference between the prize for 35th and 36th place.) The effect is also stronger during Tiger’s hot streaks, when his competitors’ prospects are more clearly dimmed. When Tiger is on, his competitors’ scores were elevated by nearly two strokes when he entered a tournament. And the converse is also true: During Tiger’s well-publicized slump of 2003 and 2004, when he went winless in major events, exempt competitors’ scores were unaffected by Tiger’s presence.
Research papers with a woman as the primary author are more likely to published if the author’s gender is unknown.
Double-blind peer review, in which neither author nor reviewer identity are revealed, is rarely practised in ecology or evolution journals. However, in 2001, double-blind review was introduced by the journal Behavioral Ecology. Following this policy change, there was a significant increase in female first-authored papers, a pattern not observed in a very similar journal that provides reviewers with author information. No negative effects could be identified, suggesting that double-blind review should be considered by other journals.
When watched, squirrels fool would-be nut thieves by pretending to bury nuts.
In the journal Animal Behaviour, biologist Michael Steele at Wilkes University in Pennsylvania examines squirrels’ caching of nuts. While the furry-tailed creatures made a show of digging a hole in the ground and covering it with dirt and leaves when watched, one time out of five they were faking and nothing was buried.
The squirrels’ deception increased after their nut caches were raided.
Stats.org presents their list of Worst
Stats.org presents their list of Worst Science Stories of 2007. Topping the list: San Francisco’s confusion of phthalates with polyethylene terephthalate, which resulted in a ban on plastic water bottles. Gosh yes, I make that mistake all the time too! (via Romenesko)
Update: Okay, lots of mail about Stats and how they’re some secret evil thinktank that takes scary libertarian money. Well, that’s true! Here’s from the editor of Stats, Trevor Butterworth: “STATS is, like CMPA, an affiliate of GMU. But as I live in New York, and write about whatever I want, so what? Yes, the University’s Mercatus Center is a citadel of free market economic theory - and again, no big secret there. Do I do Mercatus’s bidding or take industry money. No. Does STATS take industry money? It’s not our policy. We’re sure as hell not rich. And we are affiliated with the Communications department and the math department. Make of that what you will. As for chemical exposure, it’s the topic of the year - and one that is riddled with error. The rest of the worst stories concern sex, race, and drugs.” Disclosure: I have been out for a drink with Trevor one time.
Modern big wave surfing requires a knowledge
Modern big wave surfing requires a knowledge of oceanography and wave dynamics…and quick wits out on the water.
After committing to a wave, the surfer must confront the sheer tonnage of hurtling water and hit a 10-foot-wide slot of the best spot to launch a ride with pinpoint timing, a maneuver that Washburn has described as akin to “trying to place a Dixie cup on the horn of a charging rhino.”
The Hubble telescope recently captured an image
The Hubble telescope recently captured an image of a double Einstein Ring.
An Einstein Ring happens when two galaxies are perfectly aligned. The closer galaxy acts as a lens, magnifying and distorting the view of a more distant galaxy. But today astronomers announced that they’ve discovered a double Einstein Ring: three galaxies are perfectly aligned, creating a double ring around the lensing galaxy.
On an upcoming servicing mission scheduled for
On an upcoming servicing mission scheduled for August 2008, NASA plans to upgrade the Hubble telescope to be 90 times as powerful as it currently is. 90 times!
Two powerful new instruments will be installed on the mission. The Wide Field Camera 3 (WFC3) will allow Hubble to see fainter and more distant galaxies than anything it has seen before, shedding light on the early universe. This could allow Hubble to see galaxies so far away that we see them as they were just 400 million years after the big bang.
Absolute Zero looks like an interesting show
Absolute Zero looks like an interesting show on cold temperatures, airing on PBS in mid-January. For the Long Zoom fans out there, don’t miss the Sense of Scale widget.
Very few science and ideas books made
Very few science and ideas books made it on to the 2007 “best of” lists so Edge has provided a list of their picks for the year. I didn’t read any of the books on this list, although I’m currently 1/3 of the way through Jonah Lehrer’s Proust Was a Neuroscientist.
Nurture is really kicking ass these days….
Nurture is really kicking ass these days….first the IQ thing and now this.
The offspring of expensive stallions owe their success more to how they are reared, trained and ridden than good genes, a study has found. Only 10% of a horse’s lifetime winnings can be attributed to their bloodline, research in Biology Letters shows.
That suggests, a la Moneyball, that buying horses with so-so lineages and training them really well could make for a better return on investment.
A list of the top 10 astronomy images
A list of the top 10 astronomy images of 2007, including entwined galaxies and a dying star.
The pace of human evolution has accelerated
The pace of human evolution has accelerated greatly over the last 40,000 years, partially due to our population growth.
The brisk rate of human selection occurred for two reasons, Dr. Moyzis’ team says. One was that the population started to grow, first in Africa and then in the rest of the world after the first modern humans left Africa. The larger size of the population meant that there were more mutations for natural selection to work on. The second reason for the accelerated evolution was that the expanding human populations in Africa and Eurasia were encountering climates and diseases to which they had to adapt genetically. The extra mutations in their growing populations allowed them to do so.
Dr. Moyzis said it was widely assumed that once people developed culture, they protected themselves from the environment and from the forces of natural selection. But people also had to adapt to the environments that their culture created, and the new analysis shows that evolution continued even faster than before.
Looks like this study answers the “Is Evolution Over?” question.
Internet pissed at Mythbusters for not showing airplane on a treadmill
According to their web site and TV Guide, last night’s episode of Mythbusters was supposed to address the airplane on a treadmill question. They didn’t and nerds everywhere are upset. According to an email from the executive producer of the show, the segment got rescheduled:
First up, for those concerned that this story has been cancelled, don’t worry, planes on a conveyer belt has been filmed, is spectacular, and will be part of what us Mythbusters refer to as ‘episode 97’. Currently that is due to air on January 30th.
Secondly, for those very aggrieved fans feeling “duped” into watching tonight’s show, I can only apologise. I’m not sure why the listings / internet advertised that tonight’s show contained POCB. I will endeavour to find out an answer but for those conspiracy theorists amongst you, I can assure you that it will have just been an honest mistake.
Not sure that’s going to quench the nerdfury, but I’m glad the piece will air in January.
Duelity is a split-screen movie with one
Duelity is a split-screen movie with one half of the screen showing the six-day creation of the earth & man in scientific terms and the other half showing the Big Bang/evolution origin of the universe as it might have been written in the Bible. (Click on “watch” then “duelity” to get the full effect.) Nice use of infographics and illustration. (thx, slava)
The Year in Ideas, 2007
The NY Times Magazine is out with its annual Year in Ideas issue. 2007 was the year of green — green energy, green manufacturing, and even a green Nobel Prize for Al Gore — and environmentalism featured heavily on the Times’ list. But I found some of the other items on the list more interesting.
Ambiguity Promotes Liking. Sometimes the more you learn about a person or a situation, the more likely you are to be disappointed:
Why? For starters, initial information is open to interpretation. “And people are so motivated to find somebody they like that they read things into the profiles,” Norton says. If a man writes that he likes the outdoors, his would-be mate imagines her perfect skiing companion, but when she learns more, she discovers “the outdoors” refers to nude beaches. And “once you see one dissimilarity, everything you learn afterward gets colored by that,” Norton says.
I’m an optimistic pessimist by nature; I believe everything in my life will eventually average out for the better but I assume the worst of individual situations for the reasons proposed in the article above. That way, when I assume something isn’t going to work out, I’m rarely disappointed.
The Best Way to Deflect an Asteroid involves a technique called “mirror bees”.
The best method, called “mirror bees,” entails sending a group of small satellites equipped with mirrors 30 to 100 feet wide into space to “swarm” around an asteroid and trail it, Vasile explains. The mirrors would be tilted to reflect sunlight onto the asteroid, vaporizing one spot and releasing a stream of gases that would slowly move it off course. Vasile says this method is especially appealing because it could be scaled easily: 25 to 5,000 satellites could be used, depending on the size of the rock.
What an elegant and easily implemented solution. But Armageddon and Deep Impact would have been a whole lot less entertaining using Dr. Vasile’s approach.
The Cat-Lady Conundrum. More than 60 million Americans are infected with Toxoplasma gondii, a parasite that most people get from their cats. And it’s not exactly harmless:
Jaroslav Flegr, an evolutionary biologist at Charles University in the Czech Republic, is looking into it. He has spent years studying Toxo’s impact on human behavior. (He found, for example, that people infected with Toxo have slower reflexes and are 2.5 times as likely to get into car accidents.)
This may explain why I can’t seem to get past “Easy” on Guitar Hero.
The Honeycomb Vase is actually made by bees. One unintended consequence of having a vase made out of beeswax is that flowers last longer in it:
Libertiny is convinced that flowers last longer in them, because beeswax contains propolis, an antibacterial agent that protects against biological decay. “We found out by accident,” he explains. “We had a bouquet, which was too big for the beeswax vase, so we put half of the flowers in a glass vase. We noticed the difference after a week or so.
Prison Poker. This is a flat out brilliantly simple idea:
[Officer Tommy Ray] made his own deck of cards, each bearing information about a different local criminal case that had gone cold. He distributed the decks in the Polk County jail. His hunch was that prisoners would gossip about the cases during card games, and somehow clues or breaks would emerge and make their way to the authorities. The plan worked. Two months in, as a result of a tip from a card-playing informant, two men were charged with a 2004 murder in a case that had gone cold.
The Gomboc is the world’s first Self-Righting Object.
It leans off to one side, rocks to and fro as if gathering strength and then, presto, tips itself back into a “standing” position as if by magic. It doesn’t have a hidden counterweight inside that helps it perform this trick, like an inflatable punching-bag doll that uses ballast to bob upright after you whack it. No, the Gomboc is something new: the world’s first self-righting object.
More information is available on the Gomboc web site. You can order a Gomboc for €80 + S&H.
Update: The Gomboc is available for sale but it doesn’t come cheap. The €80 version is basically a paperweight with a Gomboc shape carved out of it. It’s €1000+ for a real Gomboc, which is ridiculous. (thx, nick)
Girls Excel in Science
For the first time since the 1998 creation of the Siemens Competition in Math, Science and Technology, the top honors have gone to girls. One of the two projects to take the $100,000 prize was the creation of a molecule to help block drug-resistant tuberculosis bacteria from reproducing. The other studied the bone growth in zebra fish.
Interesting tidbits: Three-quarters of the finalists have at least one parent who is a scientist. Girls outnumbered boys in the final round for the first time. Most of the finalists were from public schools. The most popular project was from three home-schooled girls who have conceived of a Burgercam, a system for monitoring the elimination of E. coli bacteria in burgers. (via nytimes)
On the possible consciousness of rocks and
On the possible consciousness of rocks and panpsychism:
First, our brains consist of material particles. Second, these particles, in certain arrangements, produce subjective thoughts and feelings. Third, physical properties alone cannot account for subjectivity. (How could the ineffable experience of tasting a strawberry ever arise from the equations of physics?) Now, Nagel reasoned, the properties of a complex system like the brain don’t just pop into existence from nowhere; they must derive from the properties of that system’s ultimate constituents. Those ultimate constituents must therefore have subjective features themselves — features that, in the right combinations, add up to our inner thoughts and feelings. But the electrons, protons and neutrons making up our brains are no different from those making up the rest of the world. So the entire universe must consist of little bits of consciousness.
Dude! Note: the timestamp on this post is exactly 4:20 pm ET. You know what to do.
Martian colors
Synesthesia is:
…a neurologically based phenomenon in which stimulation of one sensory or cognitive pathway leads to automatic, involuntary experiences in a second sensory or cognitive pathway.
For some people, this means that numbers are associated with colors…5 is blue, 2 is red, etc. In a recent experiment, a person with synesthesia was found to experience colors associated with numbers even though they were colorblind…colors that person had never actually seen with his eyes.
That may seem strange, but what it really means is that the subject had problems with his retina that left him able to distinguish only an extremely narrow range of wavelengths when looking at most images in the world — his brain was fine, but his eyes weren’t quite up to the job. But when he saw certain numbers, he experienced colors that he otherwise never saw.
He called the colors “martian colors”. (via the best thing i learned today)
As David Foster Wallace argued in Consider
As David Foster Wallace argued in Consider the Lobster, a recent study indicates that lobsters feel pain, an unpleasant finding for an animal that’s often boiled alive. But as Wallace says:
Is it possible that future generations will regard our present agribusiness and eating practices in much the same way as we now view Nero’s entertainments or Mengele’s experiments? My own initial reaction is that such a comparison is hysterical, extreme — and yet the reason it seems extreme to me appears to be that I believe animals are less morally important than human beings; and when it comes to defending such a belief, even to myself, I have to acknowledge that (a) I have an obvious selfish interest in this belief, since I like to eat certain kinds of animals and want to be able to keep doing it, and (b) I haven’t succeeded in working out any sort of personal ethical system in which the belief is truly defensible instead of just selfishly convenient.
The closure, it draws near. Remember the
The closure, it draws near. Remember the epic thread about the plane and the conveyor belt from last year…the one that pitted pilot against physicist against random internet commenter? In an upcoming episode of Mythbusters, they’re going to air the results of a test they conducted with an ultralight and a quarter-mile-long conveyor belt:
If a plane is traveling at takeoff speed on a conveyor belt, and that conveyor belt is matching the speed in reverse, can the plane take off? “We put the plane on a quarter-mile conveyor belt and tested it out,” says Savage about the experiment using a pilot and his Ultralight plane. “I won’t tell you what the outcome was, but the pilot and his entire flight club got it wrong.”
Awesome. If the laws of physics hold, that plane should take off. (thx, matt)
A group of federal researchers reports that
A group of federal researchers reports that there were 100,000 fewer deaths in 2004 among the overweight than would have been expected of people of normal weight.
Overweight people have a lower death rate because they are much less likely to die from a grab bag of diseases that includes Alzheimer’s and Parkinson’s, infections and lung disease. And that lower risk is not counteracted by increased risks of dying from any other disease, including cancer, diabetes or heart disease.
Comet Holmes brightened a millionfold late this
Comet Holmes brightened a millionfold late this week and has become visible to the naked eye, even in bright cities. The second chart on this page shows how quickly the comet shot up in brightness.
A Florida scientist has trained a brain
A Florida scientist has trained a brain consisting of cultured rat cells to fly a simulated F-22 fighter jet. [Insert “I, for one, welcome our new rat brain pilot overlords” joke here.]
To control the simulated aircraft, the neurons first receive information from the computer about flight conditions: whether the plane is flying straight and level or is tilted to the left or to the right. The neurons then analyze the data and respond by sending signals to the plane’s controls. Those signals alter the flight path and new information is sent to the neurons, creating a feedback system.
FYI, this story is a couple of years old…if that matters to you.
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