When thunder rumbles in the distance, there's a quick and simple way to figure out how close the lightning actually struck based on the speed of sound. After you see a flash of lightning, start ...

Next time you're stuck in a thunderstorm, try this easy way to calculate how far away you are from lightning strikes.

Lightning flashes from a thunderstorm light up the landscape in eastern Brandenburg. (Photo by Patrick Pleul/picture alliance via Getty Images) When thunder rumbles in the distance, there's a quick ...