Thermeleon panels make your house energy efficient without solar power

Solar panels are still very expensive and pretty inefficient, not making them the best choice for most people to install on their roofs. But some MIT researchers have created a new type of tile, called Thermeleon, which cheaply makes your house more energy efficient without fancy solar panels.

The panels change color based on the temperature, turning white when it's hot out and reflecting heat and turning black when it's cold to absorb the warmth of the sun's rays. There's no word on these becoming actual products for sale, but they seem to make a heck of a lot of sense to us.

Physorg via Engadget