People have been riding buses for more than 350 years. Billions of people climb aboard buses every day. Today's buses guzzle gas or diesel made from fossil fuels that may be used up within 50 years. Buses also release tons of pollution, making people sick and causing changes to the Earth's climate. Many people believe the future of bus transportation is electric. Electric buses are better for people's health and for the planet. Companies around the world are testing and building electric buses. Some prototypes even drive themselves. Electric buses may be coming to the streets in your town soon.