You can save a little power in a lot of places. These solar gadgets cover household cooling, portable power, trickle charging ...

Cooling your home this summer will likely cost more than ever. Across the U.S., residential electricity bills are climbing fast, just as forecasters warn of another season of unrelenting heat.

Add Yahoo as a preferred source to see more of our stories on Google. Some common building materials absorb a lot of sunlight and radiate it inward as heat, and roofing tiles are among the worst — ...