Lightning is an atmospheric discharge that typically occurs during thunderstorms. Benjamin Franklin famously conducted the kite experiment, which showed that lightning is a form of static electricity. A lightning strike generates a huge electric charge and can cause fires, destruction of property, burning of trees, and injury or death to people and animals. Lightning conductors are installed on tall buildings to protect them from lightning strikes. Safety measures during lightning include taking shelter indoors or in a car, avoiding trees and open areas, staying away from groups of people, and not using electrical devices.