This 2-foot-long, black-masked member of the weasel family once occurred in central grasslands and basins from southern Canada to Texas but is now one of the most endangered mammals in North America.

Plastic bags start out as fossil fuels and end up as deadly waste in landfills and the ocean. Birds often mistake shredded plastic bags for food, filling their stomachs with toxic debris. For hungry ...

Remote and roadless Conglomerate Mesa, adjacent to Death Valley National Park, is under threat from mining interests. The Bureau of Land Management is considering a proposal from Mojave Precious ...

The mountain yellow-legged frog was once the most abundant amphibian in Southern California's Sierra Nevada and Transverse Ranges. Just decades ago, it was hard to walk around many of California's ...

Each colored area on this map represents a different country's mining claim in the Clario-Clipperton zone. Map courtesy International Seabed Authority.

DESCRIPTION: Ringed seals, the most widespread Arctic marine mammal, have plump bodies decorated with prominent gray-white rings scattered across a light or dark gray coat. Adults vary widely in size ...

The two-inch-long, “neotenic” Jollyville Plateau salamander retains gills for its entire life and spends all its time underwater, inhabiting springs, spring runs and wet caves fed by the Edwards ...

The variability among living organisms on the earth, including the variability within and between species and within and between ecosystems. Biological diversity, often shortened to biodiversity, is ...

Having collected the most recent census data from state and federal bald-eagle managers in each of the lower 48 states and the District of Columbia, the Center for Biological Diversity has determined ...

Trapped, poisoned and shot for “predator control,” gray wolves were nearly eliminated from the U.S. West by 1945. Today, after centuries of unfounded fear and animosity, research has given wolves a ...

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 ...

Plastic accumulating in our oceans and on our beaches has become a global crisis. Billions of pounds of plastic can be found in swirling convergences that make up about 40 percent of the world's ocean ...