Humans take a beating when it comes to the environment.
Sure, we're part of the natural order here on Planet Earth, but because we're at the top of the food chain, we get a lot of blame when things go wrong. Humans have driven thousands of species extinct, some by habitat destruction, others by pure gluttony (we literally ate all the flightless dodo birds — literally). And, of course, whenever the temperature warms (or cools), it's mankind's fault.
But sometimes, every so often, the human race gets a little credit, too. Like this week, when NASA reported that space probes discovered an artificial barrier around Earth that was created purely by human activity.