America’s national parks are disproportionately vulnerable to the effects of climate change, and the political prominence of climate deniers isn’t helping. But the parks could…

Endangered and threatened species face possible extinction. Leading the effort to save them is the International Union for the Conservation of Nature, which publishes the “Red…

Our planet’s long-term health depends on moderating natural and human-made processes that lead to global warming and habitat destruction. Deforestation in Africa and elsewhere…

Cannabis has changed culture in the U.S. and other areas where laws have shifted. More adults smoke, and the public is more accepting. But with this societal evolution comes…