Earth needs a rad­i­cal plan to stop the warm­ing and save the species. Well-known ecol­o­gist Dr. Eric Din­er­stein explains ​“The Glob­al Deal for Nature”. From Cam­bridge, Dr. Chris Sand­brook cau­tions a bil­lion peo­ple could be affect­ed. Through­out, haloed nature sci­en­tist Edward O. Wil­son calls us to save half the earth for Nature. The sur­vival of all depends on it.