Keep Earth Green

Our society loves stories. Especially those about heroes. They beat the villains and save the world/Galaxy/Universe/humanity from destruction. It often requires some kind of sacrifice, like life 或者 personal happiness, but hey! It's for the greater good! We than get the enlightened feeling of how we would do it ourselves, if we had a chance. Wouldn't we?

Obviously no. We in fact have a problem that can put us and our world in serious danger. It's just that this time, there isn't a villain 你 can put behind bars. No dictators 或者 maniacs with laughing issues. This time, the villains won't stop....