The whole problem is us humans aren't very environmentally friendly. We never have been it's just now there are so many of us. The world is full. We need a damn good plague to sort us out (or check out the link below)
Your two choices are to either follow Ernknot and eat drink and be merry. Or go bush and become a mung bean. I'm leaning towards the mung bean but I'm pretty sure it's not going to make any difference.
Have a read of this to understand the problems that are facing humankind. It's not pretty. Converging Catastrophies