Amazon River no younger than 9 million years

Last remnant of North American ice sheet on track to vanish

Types of Rocks

New theories about nature of Earth’s iron

As lava hardens, a revelation bubbles up

CRUST adds new layer of defense against earthquakes, tsunamis

Parts of the Earth’s original crust remain in place today

Going deep to measure Earth’s rotational effects

Copper-bottomed deposits

Paleozoic echinoderm hangover: Waking up in the Triassic

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