Topic: Christiaan Huygens

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  • Man and Mars through history

    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

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  • George Ferris's Valentine's Day gift to science teachers

    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. 

  • Man and Mars through history

    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

  • Cover Story The Mars mystique

    After 50 years of missions to Mars, scientists are unlocking some of the mysteries surrounding a planet that has captivated mankind for millenniums. Will ­humans ever leave a boot print on Mars?

  • Are You Smart Enough to Work at Google?

    First test: See how you do with this book.