In today's world, people are always on the go. Whether a trip covers a thousand miles or a few blocks, it requires energy. A lot of the energy used for travel comes from fossil fuels, such as oil and gas, which will one day be exhausted. In addition, burning these fuels pollutes the air and releases harmful greenhouse gases that can contribute to global warming. To protect the planet, people need to use sustainable methods of travel as much as possible-transportation that is energy efficient, nonpolluting, and uses renewable energy. In other words, people need to travel green. Look inside to find out the surprising steps people are taking to travel in ways that conserve Earth's precious resources and help protect the planet.