Previous research suggested life may have arisen on Earth billion years ago. New findings suggest life started 270 million years earlier, and only about 440 million years after Earth formed about billion years ago.
Dinosaurs Might Be Alive Today If the Asteroid Had Hit Another Location — Smithsonian
Dinosaurs Might Be Alive Today If the Asteroid Had Hit Another Location
Arctic sea ice helps remove carbon dioxide from atmosphere, study shows.If Arctic sea ice is reduced, we may therefore be facing an increase of atmospheric concentration of carbon dioxide, researchers warn.