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.

Billion-year-old rocks reveal traces of ancient life

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

Human ancestors were walking upright 7 million years ago, ancient limb bone suggests, Science

Fossil - Wikipedia

Oldest-known DNA, found in Greenland, reveals life in much warmer climate 2 million years ago (including mastodons) - Chicago Sun-Times

4.6-billion-year-old meteorite is the oldest volcanic rock ever found

Carbon found in 3.95bn-year-old rocks is remnant of ancient life – researchers, Evolution

Why signs of life on Mars remain so mysterious

Oldest dated rocks - Wikipedia

Fossil Site Reveals Day That Meteor Hit Earth and, Maybe, Wiped Out Dinosaurs - The New York Times

The Oldest Chunk of Rock in the World – Greenland - Atlas Obscura

Traces of ancient life found in 1.6-billion-year-old rocks in Australia

Scientists discover a 2.5 billion-year-old ruby containing traces of ancient life

The Sun Was Dimmer When Earth Formed. How Did Life Emerge?

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