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Giant regions of the mantle where seismic waves slow down may have formed from subducted ocean crust, a new study finds.

"Today, Texarkana's unusual geographic and political arrangement continues to instruct us about the deeply intertwined nature of politics and health."

A 2022 satellite photo shows a large plume of discolored water rising from the undersea Kavachi volcano, during an eruption that likely scattered the sharks that normally dwell there.

The U.S. military's top-secret X-37B space plane has returned from a mysterious 434-day mission in orbit. The enigmatic mission 'broke new ground' for reusable space technology, according to the U.S. Space Force.

A collection of over 30 gold and silver English and Scottish coins from throughout the 1400s were discovered near the Scotland border by hobbyist metal detectorists.

The polar vortex could be reversing in a sudden stratospheric warming event, with the potential to send Arctic air and storms to the central and eastern U.S.

Buried "megaripples" — some the size of five-story buildings — are helping scientists piece together the devastation following the impact that wiped out the nonavian dinosaurs.

New research suggests that a binary pair of Kuiper Belt objects, known as the Altjira system, is actually made up of three separate bodies orbiting one another in a complex triad. This rare orbital configuration is often referred to as the "three-body problem."

A fossil that was first discovered over 50 years ago has finally been identified as a dinosaur that lived around 166 million years ago, during the Jurassic Period.