Stretching from the High Sierra to the Mojave Desert, California's rivers are of critical biological importance, forging major wildlife corridors and linking several ecological regions. These ...

In the arid Southwest, free-flowing rivers are especially essential to the preservation of native fish and other endangered species that depend on water to survive. Three-quarters of Arizona's 36 ...

An analysis of oil and gas pipeline safety in the United States reveals a troubling history of spills, contamination, injuries and deaths. This time-lapse video shows pipeline incidents from 1986 to ...

We're in the midst of the Earth’s sixth mass extinction crisis. Harvard biologist E. O. Wilson estimated that 30,000 species per year (or three species per hour) are being driven to extinction.

For every county in the United States, the map below shows information on all the animals and plants protected under the U.S. Endangered Species Act as threatened or endangered. To see the number of ...

Fast fashion is an enormous, rapidly growing industry, with the number of new garments made per year nearly doubling over the past 20 years and global consumption of fashion increasing by 400%. Waste ...

A 2020 study found that if the climate crisis isn’t addressed, as many as 3 billion people will be living in areas considered too hot for human survival within 50 years, including places like Los ...

The resilient mountain lion goes by many names: puma, cougar, panther, catamount and even “ghost cat.” Over the past century in California, it has survived habitat loss and government-sponsored ...

Like the polar bear on the opposite pole, the emperor penguin endures almost unfathomable hardships to breed and nurture each new generation — fasting for months through the planet's harshest winter ...

The world's corals and coral reef ecosystems are in crisis. In just a few decades, scientists warn, these “rainforests of the sea” and all their rich biodiversity could disappear completely. While ...

Three vital provisions give the Act its teeth. It’s “citizen-suit” provision lets public-interest groups and individuals petition and sue sluggish federal agencies to make sure the Act protects ...

The U.S. transportation sector is responsible for about a third of our country’s climate-damaging emissions. In California transportation is the leading source of greenhouse gas pollution, accounting ...