Th Imperative News Today

Various consequences of a changing planet. this is an economic and security imper thetive th imperative that we have to tackle now. >> and cnn is in paris. it is day three of the climate change summit. what is on the agenda and what is expected out of discussions today? >> reporter: so, as you mentioned, world leaders incl e including obama have largely exited paris and that leaves the negotiators here to get down to wiz. they will be working on a draft agreement that hopefully will be signed at...