Hunter goes hunting wild animals with a rake...

[phantom power]

4. In honor of your post, I'll add a quote from David Brin's latest novel:

By one way of reckoning, we transformed several hundred cubic kilometers of fossil fuels into two cubic kilometers of human beings. Perhaps the greatest engineering feat of all. Then science let us do something else unique. With the power to notice, we began asking a question that can only be pondered by worried young gods:

Is there anything we can do about all this? Repair the damage? Change things for the better?

--David Brin, Existence