Eight reactions could connect ancient Earth to modern day. Here's how. A missing piece of Earth's evolutionary timeline may have been found. Using computational modeling, a team of scientists ...

The timeline shows how short a time humans have lived on Earth relative to the rest of the timeline. This short film is from the BBC series, Evolutionwatch. Teacher Notes.

A timeline of 485 million years of Earth’s surface temperatures shows ancient greenhouse conditions were hotter than scientists thought. Skip to content. Subscribe or renew today ...