When it's hot out, or when it rains or floods, maybe you wonder "Is this climate change?" There's a name for when researchers try to make that sort of direct link -- it's called attribution science. And a big, new climate report finds it's possible to connect some extreme weather to global warming. But, look no further than Colorado to see how far attribution science has to go. Then... a man who spent a decade on family cattle ranches in Colorado collecting stories. Like how one rancher used to ship her fresh cream to Denver by train. And a look at Denver’s Skyline Park. Plus, keeping the Emerald Ash Borer out of Denver.