It's a dream come true for middle-age kids everywhere. Mattel has produced a life-size version of its original Hot Wheels car, 1969's
Twin Mill. Powered by two Chevy 502 big blocks, the real Twin
Mill reportedly spits out more than 1,400 horses. And while it's fully driveable, it's built to be shown off at auto shows and races, not on the street. And no, it's not for sale.
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Inside NASA's astronaut bootcamp and the grueling new training regimen for deep space. Plus, ten young geniuses shaking up science today, one writer's quest to analyze every man-made chemical in her body and more.
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