At first glance, the N91 appears to be a full-featured MP3 player-with dedicated music keys, prominent volume controls, a 3.5-millimeter stereo headphone jack, an FM tuner and a USB port. Only when you slide the faceplate down to reveal the keypad do you recognize it as a phone. Drag and drop music (MP3, WMA, AAC and M4A files) onto its four-gigabyte hard drive, then create playlists directly on the phone. $700
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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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