High-risk buildings should be situated far from streets to foil car bombings. The Freedom Tower will be set back at least 25 feet-10 strides-from crowded thoroughfares, with barriers for protection.
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Science is reinventing play, from extreme sports to gamification to ridiculous roller coasters to the playgrounds of tomorrow, and this issue is chock full of fun. Also, on a less fun note: Did global warming destroy my hometown?