In this new episode, host Neil DeGrasse Tyson takes on the infuriatingly controversial issue of climate change (infuriating precisely because it shouldn’t be controversial). Tyson tackles the issue of fluctuating weather (it was colder this winter where I lived) versus long-term climate change (oceans are rising, glaciers are melting) by taking his dog on a walk on the beach. The dog, with its unpredictable meanderings on its leash, he explains, is weather. Tyson, walking in a much more predictable line, is climate, which is weather measured over the long term. “Keep your eye on the man,” he says. “Not the dog.” Great advice – especially when the man is as plain a speaker, and thinker, as this guy.