New research reveals that 3.7 to 3.3 billion years ago (Archean Eon), ancient microbes relied on molybdenum -- a metal that was vanishingly rare at the time -- and even experimented with tungsten. New research reveals that 3.4 billion years ago (Archean Eon), ancient microbes relied on molybdenum — a metal that was vanishingly rare at the time — and even experimented with tungsten. The findings may rewrite how astrobiologists search for life o... [2806 chars]
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