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.

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

11 Animals That Have a Sixth Sense Additional perceptive abilities allow animals to experience the world in ways we can't imagine.

Want to know what's ailing nearby trees? This index of common tree diseases and pathogens can help you identify and prevent further decay.

Learn the definition of wind energy, how it works, the different types of wind energy, pros and cons, and more.

Learn how hybrids and all-electric vehicles create their own power for battery recharging through a process known as regenerative braking.

Rainwater harvesting is the sustainable practice of collecting and storing rain for reuse. Learn more about how to harvest and use rainwater.

The original banana used to be as ubiquitous as its replacement, the Cavendish, until it became the extinct banana.

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.

Do dogs like to be petted? Generally yes, but not on the face. Here are other things dogs hate—including some you may be doing them without realizing.

Proper identification of wild mushrooms is crucial when foraging. Our guide shows the differences between common edible and poisonous mushrooms.