Living Lab Radio talks regularly with reporters at the weekly journal Nature to get an update on the stories they've been following. Here's our latest roundup of news with London-based reporter Heidi Ledford. An Ebola vaccine has been approved for use in ongoing outbreak, though there’s no decision yet on whether to deploy it. A Canadian foundation says its field research into dumping iron into the ocean could boost fisheries in Chile, but others doubt its motives. A deep ammonia plume and a