Topic: asteroid impact
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Study: Chicxulub impact charbroiled dinosaurs
A new study explains that 66 million years ago, the Chicxulub asteroid impact kicked up a massive dust cloud that superheated the upper atmosphere, charbroiling exposed life and igniting global wildfires. The leading theory, the Alvarez hypothesis, was based on high iridium levels at the K-Pg bou...
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Dinosaurs Thrived Until the Asteroid Struck
The primary cause of the dinosaurs' extinction was a catastrophic asteroid impact at the end of the Cretaceous period, though volcanic activity and ecosystem decline were also considered factors. A recent study of fossils from just before the impact suggests that species richness in the affected ...
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