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  • 美国科学60秒 SSS 2013-01-15

    How do you to find 1 kilogram? Easy. It's the exact mass of medal cylinder called the international prototype kilogram. IPK, for short. Kept in controlled conditions in France. But the standard kilogram has gained weight since its creation in 1875. T...

  • 美国科学60秒 SSS 2013-01-14

    When normal population of healthy bacteria in the gut get out of whack, the result can be the stubborn and recurrent bacterial infection known as Clostridium Difficile, C Dif. The mean symptom is nearly constant and debilitating diarrhea. One of the...

  • 美国科学60秒 SSS 2013-01-11

    This is Scientific Americans 60 second Science, I am GretchenKuda Kroen, this will just take a minute. When normal populations of healthy bacteria in the gut get out of whack, the result can be the stubborn and recurrent bacterial infection known as...

  • 美国科学60秒 SSS 2013-01-10

    This is Scientific Americans 60 second Science, I am Gretchen Kuda Kroen, this will just take a minute. When normal populations of healthy bacteria in the gut get out of whack, the result can be the stubborn and recurrent bacterial infection known as...

  • 美国科学60秒 SSS 2013-01-09

    This is Scientific Americans 60 - Second Science, I am Karen Hopkin, this will just take a minute. After a long bath, your fingers and toes come out all wrinkly. You may have wondered why your skin would go and do such a thing. Now a study shows that...

  • 美国科学60秒 SSS 2013-01-08

    This is Scientific American 60 second Science, I am Karen Hopkin, this will just take a minute. There are in fact 100 billion galaxies, each of which contains something like a 100 billion stars. Well, Carl Sagan would have loved to get the latest est...

  • 美国科学60秒 SSS 2013-01-07

    This is Scientific American 60 second science, I am Christopher Intagliata, got a minute? If you've ever dined with a stuffy nose, you know that what you smell strongly influences what you taste. But what you see matters too. Even the color of a cup...

  • 美国科学60秒 SSS 2013-01-04

    This is Scientific Americans 60 second Science, I am Sophie Bushwick, got a minute? Comparisons of different animals have shown that larger brains provide greater intelligence, but they also guzzle more energy and have other consequences. Now scienti...

  • 美国科学60秒 SSS 2013-01-03

    This is Scientific American 60 second Science, I am Sophie Bushwick, Got a minute? Sharing is one of the hallmarks of human behavior: give me a cookie and Im more likely to give you one later. But our bonobo cousins have an odd variation on the pract...

  • 美国科学60秒 SSS 2013-01-02

    This is Scientific American 60 second Science, I am Sophie Bushwick, Got a minute? Sharing is one of the hallmarks of human behavior: give me a cookie and Im more likely to give you one later. But our bonobo cousins have an odd variation on the pract...

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