Biomass energy is made by burning living things like trees, crop residues, and other “woody biomass” to produce electricity. Like fossil fuels, biomass energy releases loads of planet-heating carbon ...

DESCRIPTION: Gray wolves are the largest wild members of the dog family, with adults ranging from 40 to 175 pounds. Wolves' fur color is frequently a grizzled gray, but it can vary from pure white to ...

Can you think of a more destructive way to extract resources than blowing up a mountain? How about if the waste from doing it is dumped straight into mountain streams? Mountaintop removal is a radical ...

Atrazine is one of the most used herbicides in the United States: Approximately 70 million pounds are used nationwide each year. It's a common contaminant of water bodies, including drinking water, ...

After Hurricane Andrew ripped through South Florida in 1992, the already-scarce Miami blue butterfly almost went extinct: No one recorded a single sighting for years. Finally, in 1999, a cheer went up ...

Amphibians and reptiles are amazing creatures with clever adaptations that have allowed them to brave the millennia. Consider the Coachella Valley fringe-toed lizard's scaly hind toes, which resemble ...

DESCRIPTION: Pangolins are mammals but are uniquely covered from head to tail with large, geometric scales made of keratin. Pangolins range in weight from just 4 pounds to a record 70 pounds.

The word jaguar comes from the South American Tupi and Guarani languages. A likely origin is the word yaguareté, meaning “true, fierce beast.” DESCRIPTION: The largest cat native to North America and ...

Global warming is projected to commit over one-third of the Earth’s animal and plant species to extinction by 2050 if current greenhouse gas emissions trajectories continue — a catastrophic loss that ...

DESCRIPTION: Roughly five feet in length, Mexican gray wolves generally weigh between 50 and 80 pounds. Their coats are buff, gray, and rust colored, often with distinguishing facial patterns. They ...

The Sonoyta mud turtle has evolved as an aquatic species in one of the driest parts of the Sonoran Desert. With webbed feet and an innate ability to swim, this turtle depends heavily on what little ...

Island foxes, one of the only carnivores endemic to California, have been distinguished from foxes on the mainland by 16,000 years of evolution — ever since they colonized the modern-day Channel ...