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...controversial paper was written by geoscientists Gerta Keller of Princeton University and Thierry Addate of the University of Lausanne, in Switzerland. Both researchers knew that challenging the impact doctrine would not be easy. The asteroid charged with killing the dinosaurs, after all, left more than the Chicxulub crater as its calling card. At the same 65-million-year depth, the geologic record reveals that a thin layer of iridium was deposited pretty much everywhere in the world. Iridium is an element that's rare on Earth but common in asteroids, and a fine global dusting of the stuff is precisely...

Author: /time Magazine | Title: Maybe an Asteroid Didn't Kill the Dinosaurs | 4/27/2009 | See Source »

...Keller and Addate worried that we were misreading both the geologic and fossil records. They conducted surveys at numerous sites in Mexico, including a spot called El Peñón, near the impact crater. They were especially interested in a 30-ft. layer of sediment just above the iridium layer. That sediment, they calculate, was laid down at a rate of about 0.8 in. to 1.2 in. per thousand years, meaning that all 30 feet took 300,000 years to settle into place...

Author: /time Magazine | Title: Maybe an Asteroid Didn't Kill the Dinosaurs | 4/27/2009 | See Source »

...mass extinction level can be seen above this interval," Keller says. "Not a single species went extinct as a result of the Chicxulub impact...

Author: /time Magazine | Title: Maybe an Asteroid Didn't Kill the Dinosaurs | 4/27/2009 | See Source »

...Keller, who treats victims at Bellevue, agrees that psychological effects of asphyxiation torture like waterboarding can be insidiously long-lived. One patient whose head was repeatedly submerged during torture has constant flashbacks. "Every time he has a shower, he panics," says Keller. One victim panics every time he becomes the least bit short of breath, even during exercise. And in most cases, it is the helplessness the victims endured under torture that renders the experience ineradicable. "They fear that loss of control," says Keller. "That's what is so terrifying...

Author: /time Magazine | Title: Waterboarding: A Mental and Physical Trauma | 4/20/2009 | See Source »

...Mohammed-meaning we may never know the final wages of what CIA agents did in dark rooms under our name. But there should be no doubt now that we tortured. "That we would still be having a discussion about whether or not waterboarding is torture is so disingenuous," says Keller. "They should come out and say what...

Author: /time Magazine | Title: Waterboarding: A Mental and Physical Trauma | 4/20/2009 | See Source »

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