A train, truck, ship and plane
Transportation refers to the movement of humans, animals or goods from one place to another, or the system/vehicle by which that movement is accomplished. There are a vast number of different types of transportation grouped by modes: transport by road, rail, water, air, cable and space.

 Transportation can be used by the public, private persons, or enterprises.

All transportation requires some form of energy to power it, whether it be supplied by humans, animals, fossil fuels, biofuel, nuclear fission or electricity. Advancements in green transportation technology have yielded cars and boats run on sustainable energy, which both saves the consumer money and reduces noxious emissions into the atmosphere. (Photo: Shutterstock)

Denver's bike-sharing program may be unconstitutional, says candidate for governor

Could solar-powered glass roads replace asphalt?

Why do Republicans hate telecommuting?

JetBlue: Flights from NYC to Boston aren't the best option

Biodiesel corrosion could cause leaks in fuel infrastructure

First look: Pedego's new 2010 e-bike battery

Rush hour traffic: Holland vs. Los Angeles

Riding the charcoal-powered motorcycle

Let's bring this back: Small car trailers

Off to Germany!

Bank robber slashes his carbon footprint with bike escape

Vote for America's Greenest School