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NPR Health and Science (6 unread)

Astronomers See A New Class of Black Hole

Posted: July 3rd, 2009, 12:00pm CDT

Scientists say X-ray data collected by the European Space Agency's XMM-Newton spacecraft show evidence of a new type of black hole in a galaxy about 290 million light years from Earth. Astronomer Sean Farrell explains what the discovery might tell us about galaxy evolution.
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Celebrate July 4th With Backyard Science

Posted: July 3rd, 2009, 12:00pm CDT

In case you forgot to pick up some sparklers for the holiday weekend, don't despair. Ira Flatow and a team of backyard science experts explain how to (safely) make firecrackers, smoke bombs and even an Oreo-fueled rocket, all while learning some basic scientific principles.
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Fireworks Are Packed With Chemistry

Posted: July 3rd, 2009, 12:00pm CDT

Why do some fireworks shoot golden flaming balls while others produce green sparks? It's just chemistry. Bassam Shakhashiri, chemistry professor at the University of Wisconsin-Madison, explains the science of fireworks.
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Can The Mississippi Delta Survive Rising Seas?

Posted: July 3rd, 2009, 12:00pm CDT

Reporting in Nature Geoscience, two coastal scientists write that rising sea levels, combined with slow Mississippi Delta growth, could drown the Louisiana coast by 2100. Delta expert Ivor van Heerden, who is not involved with the research, discusses the findings.
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Robert Ballard: 50 Years Exploring Deep Waters

Posted: July 3rd, 2009, 12:00pm CDT

Deep-sea voyager Robert Ballard has discovered everything from 10-foot-tall tube worms to the Titanic on his ocean expeditions around the world. Ballard discusses his underwater finds and how new robotic technology allows scientists to explore the sea from ashore.
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Fossil Hunters Uncover Rare Dinosaur Skin

Posted: July 3rd, 2009, 12:00am CDT

Dinosaur bones are pretty rare ... but even more unusual is dinosaur skin. Paleontologists working in North Dakota have unearthed the remains of a hadrosaur with much of its fossilized skin still intact. They hope it will offer insights into how these creatures lived, and what they really looked like.
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