A new, clearer insight into Earth's hidden crystals

Geologists have developed a new theory about the state of Earth billions of years ago after examining the very old rocks formed in the Earth's mantle below the continents.

A twist in the story of volcanic eruptions and mass extinctions

An emerging scientific consensus is that gases—in particular carbon gases–released by volcanic eruptions millions of years ago contributed to some of Earth's greatest mass extinctions. But new research at The City College ...

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