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Astronomers witness David versus Goliath fight between galaxies

Astronomers have witnessed, in the finest detail yet, a brutal David-vs-Goliath fight between two nearby galaxies that are tearing chunks from each other and flinging them into the gaseous Magellanic Stream, a cosmic river ...

Mountain streams emit a surprising amount of carbon dioxide

Mountains cover 25 percent of the Earth's surface, and the streams draining these mountains account for more than a third of the global runoff. But the role that mountain streams play in global carbon fluxes has not yet been ...

Jet stream changes could amplify weather extremes by 2060s

New research provides insights into how the position and intensity of the North Atlantic jet stream has changed during the past 1,250 years. The findings suggest that the position of the jet stream could migrate outside of ...

Huge pool of Arctic fresh water could cool Europe

British scientists have discovered an enormous dome of fresh water in the western Arctic Ocean. They think it may result from strong Arctic winds accelerating a great clockwise ocean circulation called the Beaufort Gyre, ...

Tree rings reveal nightmare droughts in the West

If you think the 1930s drought that caused The Dust Bowl was rough, new research looking at tree rings in the Rocky Mountains has news for you: Things can get much worse in the West.

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