heads over this. the president's head photo shopped on greta's body. president trump used to like to ask this question. >> would you rather see person of the year? man of the year? >> you just call greta man-eater of the year! jeanne moos, cnn. ♪ she's a man eater ♪ >>. >> you can make it up. scientists may have discovered a way to trick animals into repairing the damage caused by the climate crisis. how scientists are using underwater speakers to bring life back to australia's great barrier reef. searching for a way to help stop your cold sore?