
Most power outages in the U.S. are actually caused by squirrels, according to the American Public Power Association (APPA). The association has even developed a "Squirrel Index" system to track patterns of how squirrels impact electricity supplies.

Most power outages in the U.S. are actually caused by squirrels, according to the American Public Power Association (APPA). The association has even developed a "Squirrel Index" system to track patterns of how squirrels impact electricity supplies.