Downpours in June drove nutrients into the Mississippi River that ultimately deprived a much larger portion of the Gulf of oxygen than had been expected.
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Hearing Sparks Concerns About Planetary Science Funding
Members of Congress from both sides of the aisle questioned the administration's proposed cuts and whether support for future missions would be adequate.
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Comet Lander Makes a Hard Discovery
The Philae probe, dropped onto a comet by the Rosetta spacecraft, has made contact with a surface thought too hard to be on a comet and has detected a few organic molecules new to comet exploration.
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Fungus, Physics Explain Weird Tresses of Ice
Alfred Wegener, of plate tectonics fame, proposed a link nearly 100 years ago between fungi and "hair ice" on dead wood. A new study has identified the fungus and how it may influence ice structure.
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Leading Companies Take White House Climate Pledge
Alcoa, Cargill, General Motors, Microsoft, and nine other major U.S. companies have committed to cut greenhouse gases as part of a new White House program.
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Pluto Image Shows First Picture of Its Atmosphere
Scientists are amazed by new images that show Pluto's atmosphere and diverse geology.
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Scientists Find "Close Cousin" of Earth
The Kepler space telescope spots a planet in a solar system 1400 light years away that closely resembles Earth in its size, distance from its star, and the type of star it orbits.
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Pluto's Moons Nix and Hydra Show Their Faces
When the New Horizons spacecraft photographed Pluto last week, it snapped the most revealing images yet of two little-known moons of the dwarf planet.
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New Pluto Image Reveals Young Icy Plain
The mottled plain offers additional evidence that Pluto's surface is geologically young—and possibly still active.
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"Amazing" Activity Evident on Pluto's Surface
Scientists struggle to explain perplexing features revealed by the first close-up of the icy body's surface.