In this world we call earth we have smokers, factories,cars,and i could make a big list but it would take forever to finish it. All those things have been created by humans but most of them people put their life in risk.But how? they do that by smoking when they smoke they don't just damage the earth they also damage them selves because they cold get lung cancer. Cars there is many accidents all over the world because of cars and cars also pollute.This is something wired because we pollute and put our lifes in risk at the same time, when we could all not use cars but because of laziness we use them we could use hybrid cars and not pollute alot but its easier for a person to buy just a regular car.Since we are little we all dream on going camping having a bonfire in the woods, but if we keep polluting in 10 or 20 years those kids will just have that dream and will never come true. We are not just making polar bears disappear we are also disappearing trees, plants why because we want to build more and more buildings factories.This will happen until the day we realize there is no more trees no more plants and that's when we will say we didn't know what we had until we lost it.