The famous Paris landmark has been fitted with two new wind turbines that generate enough electricity to power the commercial areas of its first floor.
Heavy rainfall has allowed the Central American country of Costa Rica to be powered almost entirely by its hydroelectric plants.
Poison dart frogs can kill predators with super-toxic venom released through their skin. They can also inspire a system to keep airplane wings ice free.
The BoostTurbine 4000 is a reliable gadget charger for when you need extra power, but it's too big to slip into a pocket for everyday use.
Researchers from Cambridge University have teamed up with Boeing to build and successfully test the world's first hybrid airplane engine.
This gadget charger has a hand crank to turn elbow grease into energy.
It sounds like something out of Monty Python, but the salmon cannon is actually an ingenious solution to problems with fish migration.
In 2007, a tornado flattened Greensburg, Kan. Now it's on a path to financial stability thanks to a city-wide green rebuilding effort. CNET Road Trip 2014 looked at the wreckage and the recovery.
If you head over to Thingiverse, you can get instructions for a hand-cranked, 3D-printable jet engine, courtesy of GE.
According to insurance experts, it would cost £81,000 a minute if you were to pull off GTA levels of destruction in real life.