The environmental and legislative accomplishments of Stewart, Mo, and Tom Udall offer a roadmap for recovering from the damage of the Trump administration.

Half a century after the novel’s publication, the Glen Canyon Dam still stands, now home to the world’s largest mud puddle.

The war created systems that enabled trafficking in tigers and other animals. We can finally address that legacy and help both people and wildlife.

Our continuing newcomer’s guide to protesting looks at the foundational movements that shape our current and future efforts.

In the ruins of abandoned strip mines, a broad movement aims to create the nation’s first “Climate Preserve.”

When a toxic waste disaster unfolded in the 1970s, a White housewife became the face of the movement. Down the street, Black mothers worked twice as hard to be heard.

Earth Day coordinator Denis Hayes grew up in Camas, Washington, surrounded by natural beauty and unchecked pollution.

Evidence from the pandemic found that bighorn sheep populations soared when people weren’t around to disturb them.

China’s Great Sparrow Campaign aimed to “conquer nature” but resulted in as many as 75 million human deaths.

More than 50 years after the fall of Portugal’s dictatorship, the authoritarian regime still casts a long shadow over this wildfire-prone country.