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

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

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

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

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

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

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

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.

Yes, this is all about cute-overload. But if you're a regular cyclist and have a dog as your very best friend, the question will eventually hit you: How can you take your pooch along for the ride?

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 ...

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

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