Viral Video: What Is The Universe?What is the universe? This video tackles this complex question using the principles of physics.
Stephen Hawking To Turn 70, Defying DiseaseBritish scientist Stephen Hawking has managed to survive with a crippling disease. The physicist and cosmologist was diagnosed with Lou Gehrig's disease when he was a 21-year-old student at Cambridge University. Most people die within a few years of the diagnosis. On Sunday, Hawking will turn 70.

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