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Songbirds appear to have evolved through rare explosions of change separated by long periods of slower development. Many of those bursts lined up with major climate shifts, suggesting that environmental upheaval can reshape life in powerful ways.

Summary pending review.

On Wednesday, Aug. 12, a total solar eclipse will be visible in parts of Greenland, Iceland, northern Russia, the Atlantic Ocean, Spain, and a small corner of Portugal. NASA will stream the eclipse live with views across the path and interviews with subject matter experts through a variety of platfo...

As NASA’s Curiosity rover recently began climbing up a Martian valley nicknamed “Valle Grande,” it sent back images that were a familiar sight to mission scientists: honeycomb-like textures called polygonal fractures, each one about 1.5 to 3 inches (4 to 8 centimeters) across. The mission has spotte...

The drought declarations follow an exceptionally hot and dry period, which has hit rivers, crops and nature.

The July full moon is expected to peak at 15:36 BST on Wednesday.

Deep beneath submarine volcanoes, Earth may be running a natural “gold kitchen.” By analyzing volcanic glass from the Kermadec island arc north of New Zealand, researchers found that water-rich mantle repeatedly melts beneath subduction zones, gradually concentrating gold in rising magma. The proces...

Summary pending review.

Summary pending review.