Wolves howl for many of the same reasons that other species use vocalizations: to warn others about predators, to defend their territories, and to find mates. There are a number of factors that can ...

Despite slight gains in population, the Amur leopard is still on the brink of extinction. Katherine Gallagher is a writer and sustainability expert. She holds a B.A. in English Literature from Chapman ...

Beyond its affordability, this superstar material is easy to work with, drying in just one night and flexible enough to be shaped into almost any form. First, there was foamcrete, then there was ...

Alicia is a writer, photographer, and social entrepreneur specializing in sustainable travel, wildlife and nature conservation, and environmentally friendly agriculture and eating. She holds an M.S.

Wolves and humans have a complicated relationship. We often vilify the “Big Bad Wolf” in fiction and real life, but we're also consistently fascinated by these smart, social mammals, and we haven't ...

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 ...

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 ...

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 ...