Never mind the business-card size of Canon's SD550 -check out its stunning images. The SD550 sports a powerful processor, borrowed from Canon's digital SLRs, that shoots quicker, processes images faster, and reproduces truer colors than ever before. Add in a 2.5-inch LCD, and it's the ideal go-everywhere camera.7.1MP; 2.2 x 3.5 x 1.1 inches; f2.8â€4.9 3x optical zoom (37mmâ€111mm, 35mm equivalent); 60fps video; $500
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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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