A look back over centuries at man's attempt to uncover information about the 'Red Planet.'Sources: NASA, American Museum of Natural History, and Scientific American
George Ferris, whose 154th birthday is celebrated with a Valentine's Day-themed Google Doodle, didn't just come up with a new amusement park ride; he provided an opportunity for physics teachers to come up with truly terrifying scenarios.
Results: 1 of 1
© The Christian Science Monitor. All Rights Reserved.