Top news for December 21, 2008

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Dream Chaser Undergoes Testing at NASA Test Facility in Ohio

SpaceX Falcon Heavy launch of X-37B space plane now targeted for Dec. 28

Riding the Cosmic Wave: How Plasma Instability Is Changing Our View of the Universe

The Future of Quantum Computing: Harvard Team Achieves Major Error Correction Milestone

Moons around Uranus may suddenly develop atmospheres in the spring

Identical Twins Mystery: When 1 Has Dementia, Both Face a Shorter Life

DNA Tells All: The True Culprits Behind the Fall of Earth’s Largest Beasts

SpaceX’s Dragon Plays the Weather Waiting Game: ISS Crew in Action

Blue Carbon Is One of Many Companies Inking Carbon Market Deals

A Dentist Reveals What Happens to Your Teeth as You Get Older