A passive solar-heated home needs no solar panels to heat or cool it. Rather, the energy used to heat and cool a house comes directly from the sun through skylights and windows. Some of that energy is ...

Sidney Stevens is a writer and editor for magazines, websites, and books, with a focus on health and environmental issues. Some 400 billion birds share the planet with us, each with its own abundant ...

Steve Nix is a member of the Society of American Foresters and a former forest resources analyst for the state of Alabama. These conifers are not native and for the most part have not naturalized to ...

Matt Hickman is an associate editor at The Architect’s Newspaper. His writing has been featured in Curbed, Apartment Therapy, URBAN-X, and more. The longest bridge in the world, in any category, is ...

Yes, most egg cartons are recyclable, depending on the material they are made of. The typical cartons found across supermarkets are generally made of paper byproducts, #1 plastics, or Styrofoam.

Blythe Copeland is a writer, editor, and blogger who began working with Treehugger in 2008.

Cactus leather is a bio-based material lauded for its breathability, an area in which other vegan leathers fall short. This unique material is used for handbags, shoes, apparel, and furniture. Even ...

CBT provides communities with the opportunity to play a lead role in their own tourism industries. Katherine Gallagher is a writer and sustainability expert. She holds a B.A. in English Literature ...

Palm oil is a versatile vegetable oil that's ubiquitous in cosmetics and personal care products as well as packaged foods, cleaning products, and even biofuel. Making up a third of the global oil ...

Russell McLendon is a science writer with expertise in the natural environment, humans, and wildlife. He holds degrees in journalism and environmental anthropology. More than half the U.S. population ...

Chris Baskind was an ardent cyclist and car-free advocate who was dedicated to environmental issues and educating others about how to live more simply. We've all probably been guilty of this recycling ...

Of the two major aquatic environments, the freshwater biome is often overshadowed by its marine counterpart, Earth's largest and home to some of the weirdest, most wonderful wildlife on the planet.