Depending on where you live, there are some items that simply aren't recyclable, including varieties of paper, glass and plastic. Check with your city service provider to know specifics, but here ...

Learn how trees use massive amounts of water through the process of transpiration for the benefit of themselves and the Earth.

Find out what nitrogen oxides (NOx) are, why they are a serious environmental concern, and what role they play in the Volkswagen diesel engine scandal.

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

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.

Learn what community-based tourism consists of and what countries are already participating in successful projects.

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.

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 ...

The natural history and progression of forests and trees started when vascular plants arrived on Earth over 400 million years ago.

Complete profile of the corpse flower (Amorphophallus titanum), including parts, life cycle, pictures, and timelapse video of a blooming flower.

This guide to building a basic birdhouse is easy as it gets—and rest assured the nesting birds in your backyard are going to love it.

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.