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The drone camera that sits on your wrist.

                   

Though it’s only in its conceptual stages, this camera could detach itself from your wrist and use propellers to fly a few feet away to take a picture. In other words, if this actually gets made, we will know the future has truly arrived.

The Dream of Drone Delivery Just Became Much More Real

Four years after Amazon introduced the idea, big aerospace companies are finally revealing their own cargo drone prototypes.

Using unmanned aerial vehicles for door-to-door deliveries seemed like a laughable pipe dream when Amazon tossed out the fanciful idea on 60 Minutes in December 2013. But some very important people didn't find the concept so far-fetched.

Behind the scenes at Bell Helicopters and Boeing, innovative engineers started designing aircraft that could prove that delivery drones could be much more than an Amazon marketing gimmick, and in the past few weeks those projects took the form of real, working prototypes. Bell, Boeing, and many other companies hope that these cargo-hauling drones will become the cornerstone of “on demand mobility."

"ODM is about logistics," says Scott Drennan, Bell's director of innovation, during a Popular Mechanics trip to Bell’s headquarters in Fort Worth, Texas. "We believe these vehicles are needed immediately."

Drown forest fires in sound

Forest fires could one day be dealt with by drones that would direct loud noises at the trees below. Since sound is made up of pressure waves, it can be used to disrupt the air surrounding a fire, essentially cutting off the supply of oxygen to the fuel. At the right frequency, the fire simply dies out, as researchers at George Mason University in Virginia recently demonstrated with their sonic extinguisher. Apparently, bass frequencies work best.

Space drones

NASA has challenged designers to develop a conventional drone to work inside a space station, navigating with no ‘up’ or ‘down’.