graphite, history, life on earth, zircons

Study Says Life Began on Earth at Least 4.1 Billion Years Ago

Geochemists have found evidence that life on Earth could have started 300 million years earlier than previously thought. Researchers believe that life may have started 4.1 billion years ago, which means it is older than the asteroid bombardments that scarred the Moon — making it nearly as old as the 4.54 billion-year-old planet itself. Mark Harrison, ...

Troy Oakes

Earth as seen from outer space.