Dino-killing asteroid didn't act alone
There's never a good time to get clobbered by an asteroid — something the dinosaurs discovered in the worst way possible. It was 65.5 million years ago that an asteroid measuring 6 mi. (10 km) across, slammed into the Earth just off the coast of the Yucatan Peninsula, blasting out a 110 mi. (180 km) crater and sending out a cloud of globe-girdling debris that cooled and darkened the world. That spelled doom for species that had come to like things bright and warm. Before long (in geological terms, at least) the dinos were gone and the mammals arose.
That's how the story has long been told and it's still the most-widely accepted theory. Now, however, a study led by scientists at the American Museum of Natural History in New York City and published in Nature Communications suggests that the asteroid may not have affected all dinosaur species equally. Some, including the well-loved triceratops and duck-billed dinosaurs, might have been on their way out already and were simply hastened to the exit by the asteroid blast. The reason for their weakened state — and the way the investigators discovered it — provide both new insights into the fate of the dinosaurs and new methods with which to study their world....
comments powered by Disqus
- History will be trailing Japanese Prime Minister Shinzo Abe during his visit to the United States.
- Former foes honour Gallipoli's fallen on 100th anniversary
- Website exhibit unveiled for the first gay sit-in
- Climate Change Contributed Towards the Collapse of the Maya
- Armenia debuts website devoted to genocide
- How did common people mourn Lincoln after his passing?
- Stanford historian uncovers the dark roots of humanitarianism
- Historian hailed for offering a history of the culture wars
- Scholars to set the West straight about "Apocalyptic Hopes, Millennial Dreams and Global Jihad"
- Why Eugene Genovese’s 2 sentences about Vietnam went viral in 1965