Cosmic Q & A: The BIG Ones
In case you missed it, check out Wired's Wiki feature on science's 42 Very Big Questions of science with answers from several of the world's leading authorities...it's great! They include: What's at the Earth's core; is time an illusion; How does a fertilized egg become human; why do we sleep, what is the universe made of; what causes ice ages? Why do placebos work; where did life come from...
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