Cut-globe view of the continental collision between India and Eurasia from about 60 million years ago to present. Credit: Tanya Atwater, UCSB

Cut-globe view of the continental collision between India and Eurasia from about 60 million years ago to present. Credit: Tanya Atwater, UCSB

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Alka Tripathy-Lang, PhD

Alka Tripathy-Lang is a freelance science writer based in Chandler, Arizona, and holds a Ph.D. in geoscience.
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