Billion-year-old rocks reveal traces of ancient life

A recent discovery of organic compounds in billion-year-old ancient rocks in Australia helps illuminate the early history of eukaryotes, according to a new study.

2 Billion-Year-Old Pink Sea Salt Rocks Reveal How Life Began on Ancient Earth

3.77-billion-year-old fossils stake new claim to oldest evidence of life, Science

Trace fossils, the most inconspicuous bite-sized window into ancient worlds

Scientists have discovered 4.2 billion-year-old remnants of the Earth's first crust

Rare rock formations hint at what possible life on ancient Mars looked like

Something on Earth Was Moving 2.1 Billion Years Ago - Science & Health

A 'one-in-a-million' fossilized horseshoe crab brain was discovered

Scientists find 'lost world' in billion-year-old Australian rock, Science and Technology News

Ancient fish highlight the strangeness of our vertebrate ancestors

Fossil reveals the moment a cat-size mammal took on a dinosaur three times its size