By now we're familiar with some of the scarier potential impacts of climate change: Floods, fires, stronger hurricanes, violent conflicts. Well, here's a new one to add to your nightmares.
Lightning strikes in the continental United States will increase roughly 12 percent for every degree Celsius of global warming, a study published today in Science finds. If warming continues unchecked, that could translate into a 50 percent increase in lightning by the end of the century—three strikes then for every two strikes now. (On average, there are currently about 25 million strikes per year.)