 |  | Earth's earliest mobile organisms lived 2.1 billion years ago |  | Scientists have discovered in 2.1-billion-year-old black shale from a quarry in Gabon the earliest evidence of a revolutionary development in the history of life on Earth, the ability of organisms to move from one place to another on their own. | | |  |  |  |  | Related Video | |  | |  | |  |  |  | Great Debate | |  | |  | |  |  |  |  |  | A daily digest of breaking business news, coverage of the US economy, major corporate news and the financial markets. Register Today |  | |  |  |  | The latest Reuters articles on M&A, IPOs, private equity, hedge funds and regulatory updates delivered to your inbox each day. Register Today |  | |  | » » MORE NEWSLETTERS |  | |
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