A climax forest is filled with trees that are considered the last stage of succession for that region. Learn more about this special type of forest.

Hardwood Trees: Identifying the Most Common Species Use leaves, fruit, and flowers to identify types of hardwood trees.

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.

Two species of sloths are endangered according to the IUCN Red List. Learn about conservation efforts and how we can help restore sloth populations.

Here are maps showing locations of broad types of forest cover by tree types according to frequency of occurrence in the native range.

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

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.

How Do Solar Lights Work? Types, Uses, and Environmental Impacts Discover your solar lighting options and which products are designed to last.

Cactus leather can be used for handbags, shoes, furniture, and more. We look at its environmental impact and how it compares to cotton and leather.

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

Most Americans live in urban areas, forming huge hot spots of energy consumption. But while rural residents use less energy overall, cities are often slicker ab ...