Young graphite in old rocks challenges the earliest signs of life
Wednesday, May 18, 2011 - 12:30
in Paleontology & Archaeology
Carbon found laced within rock formations has helped establish a timeline for the emergence of life on the planet. But a new study contends such carbon deposits may be millions of years younger than the rock they inhabit, fueling a reassessment of the first appearance of the earth's earliest biosphere, according to a team of US researchers.