Center for Biological Diversity

The 9th Circuit Court of Appeals ruled Arizona hunters won’t be barred from the use of lead ammunition even if the bullets left behind could result in the death of other animals.

A federal judge will hear arguments Thursday from conservation groups that want to stop two mining projects in southern Arizona’s Patagonia Mountains.

Conservationists are suing the U.S. Fish and Wildlife Service over habitat for two threatened snake species in Arizona and New Mexico.

This weekend federal officials will begin another round of chemical treatments in the Colorado River meant to remove invasive fish. But environmentalists want more to be done to protect native species.

Environmentalists are asking Mexico’s environmental ministry to increase protections for bobcats under the country’s list of species at risk.

A coalition of tribal and environmental groups has submitted resolutions to federal regulators opposing three pumped hydro-storage projects proposed for Black Mesa on the Navajo Nation.

A new report from the Center for Biological Diversity says about 1,800 stadium lights across protected lands on the U.S.-Mexico border in Arizona could affect animal migration routes and dozens of threatened and endangered species if turned on.

A conservation group says cattle grazing is having negative impacts on a protected river in southern Arizona.

Environmental groups are calling on federal officials to prevent populations of non-native smallmouth bass from establishing below Glen Canyon Dam on the Colorado River.

A national conservation group says it plans to sue the federal government for failing to protect 15 plants and animals in the U.S.