Our guest in this Trump on Earth episode says if Trump's replacement plan holds up in court, it could hamstring future presidents from tackling climate change.
Forty years ago, we almost stopped climate change. What happened? And more importantly, where does that leave us now? Author Nathaniel Rich has some answers.
In the 1960s, Pittsburgh's horrible air earned it the nickname ‘Hell with the lid off.' But a group of housewives, doctors and engineers with a knack for guerrilla marketing helped clear the air.