Posts Tagged ‘Isotope’

Life on land took hold 300 million years earlier than we thought

Newly discovered evidence of microbial activity in tiny grains of the iron sulfide mineral pyrite indicate that life took hold on land as early as 3.2 billion years ago, a team of German researchers reported this week in Geology, the official journal of the Geological Society of America. Sami Nabhan of the Free University of […]

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‘Weighing’ atoms with electrons

Vienna, Austria (SPX) Oct 14, 2016

The different elements found in nature each have their distinct isotopes. For carbon, there are 99 atoms of the lighter stable carbon isotope 12C for each 13C atom, which has one more neutron in its nucleus. Apart…

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