When big cats cross from one country into another, they can fall victim to wildlife traffickers, drug cartels, highways and more emerging threats.

How will the border wall affect jaguars, bears, birds, bees and other wildlife? And what other solutions might work better without harming people or ecosystems?

Decades after being wiped out in the Lone Star State, black bears are slowly returning. Experts fear that a border wall between the United States and Mexico would end that recovery.

Environmental and constitutional law scholar Dan Farber explains what a climate change emergency declaration could achieve.

What border communities really need are solutions to address economic, health and climate problems — and the mesquite tree can help.

President Trump’s invocation of a national emergency to build his border wall is worrying and “illegal,” according to scholars.

Experts warn that the shutdown has furloughed or hobbled personnel responsible for diagnosing and detecting wildlife diseases.

New photographs reveal that the National Butterfly Center in Texas is also home to an amazing array of 200 bee species — some of which exist nowhere else in the United States.

If the Trump administration can show such disregard for society’s most vulnerable people, what does that mean for clean water, endangered species and other environmental issues?

Even before the border wall is built, local business owners and conservationists worry about its impact on tourism and wildlife.