An Inconvenient Truth

I learned that global warming is scarier than what people make it seem. One part of the documentary that really caught my eyes was when Al Gor was talking about polar bears. In order for polar bears to survive they need ice; however, the ice in the poles are melting thus making the polar bears have no wear to rest or sleep. Not only are they looking for ice to sleep, but  to relax and since they cant find any ice they are drowning. This made me realize that we need to act immediately because sooner or later the polar bears will be extinct along with all the animals that need ice. If the animals go extinct that alters the food change and ecology of the planet making different animals die or multiply. Global warming is taking effect now and if the ice melts several cities will go under water within the next 40 years, which makes this even scarier and treacherous.