climate change. this is blue card business, blue carbon we just need to plant and we need to protect nature will do the rest. >> carbon plus cnn films sunday get none hi this sunday night at 8:00 p.m. i hope you join me and cnn's nick paton walsh for a new episode of the whole story. >> here's an up-close look at a war you probably haven't heard about it's a battle and sri killing people in asian elephants nearly every day. that's because rapid development has pushed humans farther into the wild where elephant once room really now humans, and elephants are clashing and sri lanka, nick went on an overnight patrol with locals trying to protect their crops and villages. there's a preview base of this conflicts, weapons, firecrackers, thunder flashes