The sixth extinction  MAY 18 2009

This week in the New Yorker, Elizabeth Kolbert tells us that up until modern times, there have been five big mass extinctions of life on Earth. Most biologists now agree that we are in the midst of the sixth big mass extinction, one caused by humans.

Currently, a third of all amphibian speicies, nearly a third of all reef-building corals, a quarter of all mammals, and an eighth of all birds are classified as "threatened with extinction." These estimates do not include the species that humans have already wiped out or the species for which there are insignificant data. Nor do the figures take into account the projected effects of global warming or or ocean acidification. Nor, of course, can they anticipate the kinds of sudden, terrible collapses that are becoming almost routine.

See also a related audio clip by Kolbert, the Holocene extinction event, and colony collapse disorder.

Read more posts on kottke.org about:
biology   Elizabeth Kolbert   science

kottke.org

Front page
About + contact
Site archives

Subscribe

Follow kottke.org on Twitter

Follow kottke.org on Tumblr

Like kottke.org on Facebook

Subscribe to the RSS feed

Advertisement

Ads by The Deck

Support kottke.org shop at Amazon

And more at Amazon.com

Looking for work?

More at We Work Remotely

Kottke @ Quarterly

Subscribe to Quarterly and get a real-life mailing from Jason every three months.

 

Enginehosting

Hosting provided EngineHosting