First life on Earth came 3.5 billion years ago, study claims
A NASA-funded study has claimed that microscopic fossils discovered in a nearly 3.5 billion-year-old rock in Australia are the oldest fossils ever found, and give the earliest direct evidence of life on Earth. However, earlier studies on fossils from Canada claimed to find remains of 3.77 billion-year-old microorganisms and carbon fragments in 3.95 billion-year-old rocks, giving rise to debates.