 the politics of that are going to be very, very complex. My guest is journalist Jeff Goodell, author of The Heat Will Kill You First, Life and Death on a Scorched Planet. You're listening to Think. I'm Chris Boyd. Jeff, how much progress has been made toward assigning liability for climate change events, like determining which heat waves and storms and other catastrophes can be attributed to human-caused climate change as opposed to events that might have happened in ordinary times?