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

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.

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

What should you do when a wasp or hornet lands on you? Learn more about why wasps attack and how to avoid getting stung.

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.

Even though pineapples are considered a fruit (and a fruit generally comes from trees—unless it’s a berry), pineapples actually grow on a plant close to the ground. Each pineapple plant bears ...

Here's how to identify certain deciduous trees by closely examining the characteristics of their leaves.

Learn how composting toilets work, different types, maintenance tips, how to use them, and what happens to the waste in a composting toilet.

Learn how to identify the yellow poplar tree, including facts about its habit, range, management, and more.

Maps show the vast range of the various spruce tree species that can be found throughout North America.