It's man.

That's the longstanding and well-supported scientific consensus...but of course you only have access to that in places where science is not censored and scientific advice is not edited to fit the conclusions desired by special interests and their pet politicians.
So it's lucky we live in the free world, isn't it?Smiley

But that won't stop the propaganda (sorry, sponsored research) from the morons who are happy to drive the rest of us to extinction while they treat our environment as their personal kitty litter.