Uranium isotopes carry the fingerprint of ancient bacterial activity
Lausanne, France (SPX) Apr 22, 2015 - The oceans and other water bodies contain billions of tons of dissolved uranium. Over the planet's history, some of this uranium was transformed into an insoluble form, causing it to precipitate and accumulate in sediments. There are two ways that uranium can go from a soluble to an insoluble form: either through the action of live organisms - bacteria - or by interacting chemically with certain ... more
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