TIL that “vampire” drones dock on power lines and recharge by “feeding” on the grid. They never need to land.
https://www.fastcompany.com/91089861/this-genius-vampire-drone-is-designed-to-fly-forever
#til #todayilearned
https://www.reddit.com/r/todayilearned/comments/1frhvbl/til_that_vampire_drones_dock_on_power_lines_and/
Developed by a team of researchers at the University…
Fast Company
@todayilearned just like "birds" 
"Five years later, the tech had advanced far enough for them to replicate their plastic parts.
So all they needed to do is hunt for a bit of wire here, a small motor there.
Of course they crashed the grid after a while. It's what they were designed to do."
@todayilearned Connecting to power cables is landing.
The part that scares me the most, is how easily they would be to convert into cable cutters. They could cause major blackouts that could take forever to repair? weapon of war/terrorism?