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Art Authentication
See how clever computer algorithms can distinguish a master fake from a masterpiece.

Brain Trauma
Even so-called "mild" head injuries turn out to be anything but.

Capturing Carbon
An eighth-grader's science fair project prompts her scientist father to develop a new way to pull excess carbon dioxide out of the atmosphere.

Killer Microbe
A relatively benign bug becomes a highly lethal pathogen, known to U.S. soldiers as Iraqibacter.

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