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.

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

Behold the tundra biome. Characterized by extremely cold temperatures and treeless, frozen landscapes, the species here are marvels at adapting to the harsh climate.

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

Learn how to identify different types of common trees with these leaf silhouettes, including maple, sweetgum, birch, oak, and more.

Temperate grasslands are savanna-like areas located on every continent except Antarctica. Learn about the animals and plants in this biome.

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.

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.

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

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 ...

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