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

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

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

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

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

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.

There are thousands of lizard species, and many are critically endangered. Meet the Fiji crested iguana and other rare and beautiful reptiles.

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?

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.

Hempcrete provides an increasingly popular, low-carbon option for home building. Discover its unique benefits over traditional building materials.

This is a collection of some of the best magazines for enthusiasts of small farming, homesteading, and self-sufficiency.

The Food and Agriculture Organization of the United Nations has maps of major world forests. These maps represent current global forest cover.