Small fossils show mammals moved to the ground before the dinosaurs vanished. New plants changed habitats, giving better food ...

New research suggests the theory that dinosaurs were declining before Chicxulub is the result of a poor (and misleading) ...

Scientists analyzed the fossil record of North America in the 18 million years up to the asteroid impact between 66 and 84 ...

The idea that dinosaurs were already in decline before an asteroid wiped most of them out 66 million years ago may be ...

However, despite their universality, it is unclear how they have varied in the wake of mass extinction events. Here, we show how SARs for North American terrestrial vertebrates varied across the ...

“It was the enrichment of iridium in Cretaceous/Palaeogene boundary sediments that was the highly convincing ‘smoking gun’ for the dinosaur extinction when (the) idea was first published in 198 ...

Researchers first identified the cause of the end-Cretaceous extinction by the discovery of the “iridium anomaly” — a 1-centimeter-thick (0.4-inch-thick) layer of sedimentary rock rich in ...

The World Sparrow Day is observed to create and raise awareness about the worrying state of the sparrow population, which is close to extinction. The day also aims to bring individuals together who ...