The SONUS Acoustic Weapon Locating System from Leonardo UK reportedly uses sound analysis to detect and locate gunfire, mortars and explosions — all without emitting an electronic signature.

"Acoustic rainbows" sound psychedelic. But the idea is no acid trip: By dispersing sound waves, noisy objects can actually be ...

Engineers have long searched for cleaner ways to fight fires without relying on water or chemicals. In 2015, two George Mason University students, Viet Tran and Seth Robertson, developed a portable ...

A wildfire burns in the hills of a Los Angeles suburb, leaping from one patch of dry brush to another as it approaches a cluster of homes. The landscaping at the first house burns, but the house ...