Thanks to the app FaceApp you can now see how you will be when you will be old. Odd but funny, this app has an exclusively playfull goal. However, Greenpeace used the same concept to talk about a less superficial theme : global warming. With EarthApp, the NGO show you pictures of our planet before and after the climate change. The result is impressive and frankly quite scary : a good way to shake our minds and to inform about this dangerous phenomenon.