Lightning strikes may have supplied a key ingredient that allowed life to emerge on early Earth, according to a new study of "fossilized" lightning.
Deaths in the U.S. from lightning strikes are up in 2015, compared with recent years. A convertible won't save you. Get inside at the first rumble of thunder, and stay away from plugged-in appliances.
Researchers writing in the journal Science say that if the rate of global warming goes unchecked, the frequency of lightning strikes will increase by 50 percent.