Sign In

Communications of the ACM

ACM News

The Origin of Complex Life on Earth Just Got a Little Less Mysterious

View as: Print Mobile App Share: Send by email Share on reddit Share on StumbleUpon Share on Hacker News Share on Tweeter Share on Facebook
Snowball Earth

About 650 million years ago, the Sturtian ice age turned our planet into Snowball Earth. When the planet warmed again, it was plunged into a hothouse phase that unleashed phosphates, oxygen, and other elements necessary to build multicellular life.

Credit: NASA

Life on Earth goes back at least two billion years, but it was only in the last half-billion that it would have been visible to the naked eye.

From Ars Technica
View Full Article


No entries found

Sign In for Full Access
» Forgot Password? » Create an ACM Web Account