Top 15 Most Expensive Gemstones In The World

Top 15 Most Expensive Gemstones In The World

The Dipping Moho is a sign of one continent being thrust over another. Credit: IGG

Plate tectonics goes global

Ol Doinyo Lengai volcano in Tanzania, a source of carbonate-rich magma.

Geologists publish new findings on carbonate melts in Earth’s mantle

Workers excavating Hall’s Cave in Central Texas. Image Courtesy of Michael Waters

Cooling of Earth caused by eruptions, not meteors

lizard

Biologist sequence genome of rare reptilian ‘living fossil’

Malignant cancer diagnosed in a dinosaur for the first time

Malignant cancer diagnosed in a dinosaur for the first time

Mountains

Ancient mountains recorded in Antarctic sandstones reveal potential links to global...

Mars

Early Mars was covered in ice sheets, not flowing rivers, researchers...

Fjords Bare hotspots

Ancient mountain formation and monsoons helped create a modern biodiversity hotspot

An African Elephant walks through the drying streambed of Chitake Springs as the drought season descends on Mana Pools National Park in Zimbabwe Photo credit: Trisha Atwood.

Herbivores, Not Predators, Most At Risk of Extinction

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