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Life's Really Big Questions

 
   
 
 

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Noah’s Snowball
Researchers find evidence that a massive ice age gave birth to a whole new type of animal - a multicellular one.


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Alien Worlds
Astronomers look for and find worlds outside our solar system. Some of them just might be teeming with life.


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Robot Independence
Natural selection is at work in the artificial world, as robots learn to reproduce without us.


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Handmade Humans
What separates humans from the rest of the animal kingdom? It could be as simple, or as complex, as the way we pitch a baseball.


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I, Robot
Philosopher and author Dan Dennett marvels at the human machine and its unique ability to wonder.


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