In an era when residential energy use accounts for a fifth of U.S. emissions, these off-the-grid communities are carving their own sustainable paths.

Wood is a highly ordered arrangement of living, dying and dead cells. Here is a briefing on how tree cells grow and function structurally.

Hardwood Trees: Identifying the Most Common Species Use leaves, fruit, and flowers to identify types of hardwood trees.

A quick review of the benefits of hybrid poplar, like quick growth, and its associated problems and bad habits.

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

Charismatic otters are the largest members of the weasel family. Unlike other weasels, otters are semi-aquatic. Their sleek bodies range in size from two to nearly six feet long. Thirteen otter ...

Mold and mildew are natural summer byproducts. That doesn't mean you want to share your house with spores, however. Learn how to kill mold naturally.

Albatrosses can soar at high speeds for up to eight hours without even moving their wings. Learn more about these amazing birds and how to help them.

This massive stretch of forest plays a significant role in the planet's biodiversity and even its climate.

Are Zoos Ethical? Arguments for and Against Keeping Animals in Zoos Zoos, if done right, could be a good thing for the animals and the public—yet many so-called zoos get it terribly wrong.

From your garden to your teacup, Here's how to plant, harvest and blend your own tea.

Everything You Ever Wanted to Know About Tumbleweeds Part cultural icon and part invasive nuisance, tumbleweeds have an intriguing and tangled history.