After centuries of silent designs, architects are designing for the ear, too.
Molten aluminum mixing with water could have ultimately brought the towers down
Scientists produce five clones of a dog that assisted with 9/11 search and rescue, and died in April
Toxin sniffers, missile jammers, dirty-bomb detectors: Will a new security arsenal make us safer?
Missile-jamming lasers and â€œrefuse to crashâ€ software are ready to fly on civilian aircraft
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