Oldest direct proof of life on 3.5-billion-year-old rock found 20km south of Jamshedpur

Scientists found the oldest direct proof of life on a 3.5-billion-year-old rock 20km south of Jamshedpur. Trisrota Chaudhuri of the GSI discovered black microbial mats in chert near Bhitardari. "The chemical signatures suggest that by 3.5 billion years ago, life forms were already using sophisticated ways of turning carbon," she said.