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.

15 Smokey Bear posters were created in the mid-1980s for a major state and federal fire prevention campaign. Explore the collection and their message.

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

Want to turn your bathroom into an indoor oasis? From ferns to orchids, here are 10 shower plants that want to live in your bathroom.

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

Cupro is a byproduct of cotton and a vegan alternative to silk. Does that mean it's a sustainable fabric? Find out exactly how this material is made.

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.

What are synthetic fabrics, and are they a sustainable choice? Learn about the environmental impact of these fabrics, their dyes, and more.

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 ...

The saltcedar or tamarisk tree is degrading the wetlands in the desert southwest, invading springs, ditches and streambanks in nearly all western states.

Learn how slow fashion got started, how its meaning has evolved over the years, and how you can incorporate its practices into your life.