Book excerpt: A more-than-ever actual topic: our Planet is really endangered and we witness this on a daily basis. A brief introduction will give a background to the different issues that affect our Earth, that will be developed in the following chapters (dedicated to global warming and all kind of pollution) thanks to the heartfelt interviews of great influential people who took action in first person. Original, never-published-before interviews with some of the most famous people of the world: Jane Goodall, Leo di Caprio, Matt Damon, Robert Redford, Barack and Michelle Obama, Cate Blanchett, Harrison Ford and so on.