When the Road Salt Seeps, Sometimes the Manhole Covers Fly

When the Road Salt Seeps, Sometimes the Manhole Covers Fly
Call it another form of March Madness: Not flying basketballs, but flying manhole covers. Scientific literature traces manhole explosions back nearly a century, but a series of such incidents in Indianapolis, host of the NCAA basketball championships …
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Small BeeRotor Drone Learns To Fly By Sight Alone
Secretly, a lot of drones are cell phone parts disguised as flying machines. Advances in cellular technology, like miniaturized powerful batteries, cheaper smaller cameras, and sensors like accelerometers have all found their way from our pockets to …
Read more on Popular Science