The writer’s second book on animal agriculture asks readers to take a hard look at their own role in the climate crisis.

Climate change is poised to alter the face of global conflict.

In a warming world, fights over water usage have become ideological battles.

On Thursday night, Democratic voters were getting snatches of the policy fights they deserve—just not on the topic that could matter most.

Raise the stakes for Brazil’s president—and work with the nation's people, not against them.

CNN's town hall on climate change was a good show. But it wasn't what the presidential race needs.

They're refusing to hold a debate on global warming. Voters have the power to punish them for it.

Parents of young kids need to get serious about climate change. And that starts by showing up to vote.

Aggressive reforestation will be required to stem climate change—and that includes the United States.

Why do right-wing men hate Greta Thunberg and Alexandria Ocasio-Cortez so much? Researchers have some troubling answers to that question.

Climate change is accelerating the spread of lethal algal blooms in American waterways—with devastating results for humans and animals alike.

Few humans hold more responsibility for the unfolding climate crisis than David Koch, the 79-year-old oil magnate who died this week.

Supporting indigenous people's projects could be more effective than trying to persuade the openly dismissive Brazilian government.

Democrats are seeking advice from people who once opposed action on global warming. They should be seeking accountability.

In Brazil, a struggle over the future of the Amazon is taking place. The struggle will have global impact.

The CNN debates paid a historic amount of attention to the climate crisis—but were still embarrassingly behind the curve.

Anyone who says otherwise isn't taking climate change seriously.

Jay Inslee says the next four years "is our last chance ... to do something about it." Is he right?

This crisis deserves far more than 15 minutes of airtime.

Global warming is causing mass migrations around the world. In New York, it's forcing people from their homes in quieter ways.