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Cool Sites Just for Fun
$1,000,000
Who wants to win $1,000,00? Test your knowledge of math and science.
How Stuff Works
NASA
Fact Monster
Quarks to Quasars
For example, how olympic training works.
Astronomy Picture of the Day.
All the facts you need and don't need.
A visual journey consisting of 42 images--42 powers of 10.
