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 ...

ULEV is an acronym for Ultra Low Emission Vehicle. ULEVs release emissions that are 50 percent cleaner than the current average year's models. ULEVs take the LEV, Low Emission Vehicle, standard a step ...

A solar tree is a structure resembling a tree that generates solar energy using photovoltaic (PV) panels. It employs principles of biomimicry, using a natural system—in this case the form of a tree—to ...

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 ...

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 ...

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 ...

Steve Nix is a member of the Society of American Foresters and a former forest resources analyst for the state of Alabama.

Alex Davies is a technology journalist and the author of "Driven," an upcoming book about the self-driving car industry.

Katherine Gallagher is a writer and sustainability expert. She holds a B.A. in English Literature from Chapman University and a Sustainable Tourism certificate from the GSTC. Native to Southern ...

Steve Nix is a member of the Society of American Foresters and a former forest resources analyst for the state of Alabama.

Meghan Holmes is a writer and documentarian specializing in scientific topics such as the environment, invasive species, sustainability, and food issues. She holds a master's in Southern Studies from ...

Jim Gunshinan is a writer and editor who has published articles about green homebuilding and renovation, energy, the environment, and climate change. Hempcrete is an energy-efficient, low-impact, ...