How does turning off a light help reduce global warming?
Most of the electricity used for running computers, lights, television sets, and video game systems is generated by power plants that burn fossil fuels to make steam to turn a turbine that spins a generator. Since the burning of fossil fuels adds greenhouse gases to the air, any reduction in their use will help turn the problem around. The bottom line is that the less electricity we use, the less we need to burn fossil fuels.
