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In 2008 scientists reported that rocks in Canada were the world’s oldest. New data appear to confirm this contested claim ...

A tiny grain from asteroid Ryugu has revealed djerfisherite, a mineral that normally forms in scorching, oxygen-poor settings ...

The gold standard for determining the age of ancient rocks is measuring the radioactive decay of isotopes of uranium into lead in minerals known as zircons. But not all rocks contain zircons, so ...