|
From SPACE.com:
Asteroid and comet impacts on Earth can cause catastrophic extinction events. They can also bring life back, new research shows.
Many scientists believe that a massive rock from space came crashing down 65 million years ago at the end of the Cretaceous Period. The resulting blast set forests ablaze. The skies of Earth were filled with ash that blocked out the sun, and the planet went cold. Vegetation died in the absence of sunlight. Shortly thereafter, the dinosaurs and many other life forms on Earth went extinct. Millions of years of evolution were wiped clean in an instant.
Read the whole article
|
Users who posted comments:
Anonymous Hero (2), Ferris (2), Guest (3), Orpheuse (1), PWSlack (1), Sparkstation (1)