CmdrTaco from the look-up-in-the-air dept.
An anonymous reader wrote in to tell us about a microplane that perches on power lines to recharge its batteries being developed as a surveillance device at MIT. As you can imagine, landing on a power line is hard to do ... and charging off transmission lines has its own problems.
We will have solar energy as soon as the utility companies solve one technical
problem -- how to run a sunbeam through a meter.