I've been a big fan of Tom Toles' illustrated satire for a long time. He works now for the Washington Post Syndicate. His cartoons are consistently clever and incisive.
He does a lot of cartoons about the insane way we humans relate to our environment. These days, a lot of of his art focuses on climate change. Here are a few examples.
Here is a link to Tom Toles' work... http://www.washingtonpost.com/opinions/toles