How the president and Congress have been tearing down U.S environmental and climate change policy. Plus, a look at the invisible workers keeping child porn off your social media platforms.

California Governor Jerry Brown talks about how states can take the lead on issues like climate change and clean energy. And a strategy for building an immunity to fake news.

A 140-year-old seed study and an evolution project more than 66,000 generations old—we take a look at long-lived experiments. Plus, how to talk about climate change if you want to convince someone it’s happening.