Energy from thin air?

 Seriously?

And it may be a silver lining to two horrible diseases...tuberculosis and leprosy. A bacterium in that group can convert hydrogen into electricity. Mycobacterium smegmatis is what we call an extremophile, meaning it survives in environments that aren't hugely conducive to life. It's learned the trick to compensate for lack of nutrients.

Now we have taken its enzyme and may be able to use it to power certain very low power devices just from the air itself. This might include digital clocks and things like sensors. It could also be used in biological fuel cells to power your smartphone...or maybe your car...with just hydrogen as fuel.

But even just from the air it could be used to power small devices in inconvenient locations where changing or charging a battery is annoying. And sustainably.