Halevy

September 12, 2019

How Hot Was the Ocean?

Isotopes in iron oxides laid down two billion years ago hold clues to the conditions in which they were created – and they were not boiling – according to Weizmann...

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February 2, 2017

A Rusy Green Early Ocean?

Though they may seem rock solid, the ancient sedimentary rocks called iron formations – the world’s chief economic source of iron ore – were once dissolved in seawater. How did...

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