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

The unexpected announcement reverses a plan to move people out of critical protected habitats — and puts the nation’s amazing biodiversity at risk.

People often think of urban landscapes as concrete dystopias, but the future may reside in cities that can sustain both people and nature.

Trump’s “take no prisoners” deregulatory strategy carries big litigation risks.

So how can we learn to hear the howl?

Disease has struck the rare Asiatic lions of Gujarat, and other new threats have put their recovery in jeopardy. What will it take to save them?

These easy policy changes can save protected species from being killed by cruel fishing practices without infringing on the rights of anglers.

The so-called “Affordable Clean Energy Rule” exemplifies the administration’s irresponsibility on climate change.

As Washington state prepares to vote on a carbon tax, how is the one in Alberta, Canada, faring?

What’s the real environmental impact of a plastic straw compared to the 80 million people we add to our population every year?