Electric cars hybrids rely upon electric motors for propulsion and assistance. Here is a look at how these motors and generators work to generate power.

Gasoline Gallon Equivalents (GGE) are used to determine the amount of energy produced by alternative fuels compared to that of one gallon of gasoline.

You don’t have to break the bank to eat sustainably and eat well. Follow our tips to keep more bucks in your pocket and more ...

What are the tallest trees in the world? These 10 skyscraping superstars are some of the stalwart examples of their species.

Keeping your tires properly inflated is one of the simple things you can do to lower your carbon footprint and fuel costs, and also stay safe.

Pinyon pine is a widely distributed pine that grows in the Intermountain region of western North America. It is a major indicator tree in the pinyon-juniper life zone. P. edulis is a short and ...

The Butternut tree (Juglans cinerea) grows rapidly on well-drained soils of hillsides and streambanks in mixed hardwood forests.

There are 145 National Forests in 41 states in the United States. Discover each of them, state-by-state.

Friends and enemies in the animal world tend to be pretty clear-cut. But as these unlikely pairs show, even Mother Nature doesn't set things in stone.

From Venezuela to South Africa, tropical and temperate rain forests are the most bio diverse ecosystems on Earth.

Cellulose tape is a transparent adhesive tape that happens to be biodegradable too. It is difficult to find, especially in the US. Almost all transparent tape sold here is made of acetate. One ...

9 Fascinating Facts About Starfish These misnamed stars of the sea can be found in tidal pools and coral reefs, as well as among kelp beds and seagrass.