25 Big IdeasThe world has challenges; we have solutions.
Welcome to the Food ChainAs once-threatened animal
populations rebound and people move into former wildlands, predators
are showing up precisely where they don't belong: in backyards. And the
wildlife isn't as afraid of us as we might think.
SupercarrierForget pen-and-ink drawings and wooden
models -- building the Navy's first new class of aircraft carrier in 40
years calls for virtual-reality computer programs that transform 54,000
tons of steel into a massive blue-water warship.
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