"man has caused none of it"
HAHAHAHAHA
Runoff from development warms the rivers and streams, that is undisputed fact.
1 billion vehicles in use daily in the world.
Go and start your vehicle and put your hand on the exhaust and feel the nice cool air coming out.
There's your sign!
Glaciers are melting at a rate hundreds of times faster than they have for tens of thousands of years and folks believe man plays NO part.
Not claiming man plays ALL THE PART OF IT, maybe not even a majority of it but to make the claim that man has played NO part in polluting the earth and that direct correlation to warming is ignorance of the highest order.
Man in fact plays a role. To deny that is ignorance.
I really enjoy it when I have to change my opinion (for the better) of a poster on this board.
I always have to ask when in the course of earths long history, man burned trillions of tons of carbon (in the form of oil and coal) put those resulting gases back into the atmosphere and found that these gases caused no harmful effect.
When did that happen? Before the last 100 years or so.
I guess the global warming deniers will admit that once, a long time ago, the earth did warm considerably. And man had nothing to do with it. But those pesky huge volcanoes did.
And what was it those volcanoes were spewing you might ask? Carbon. Lots and lots of carbon dioxide.
So man has taken the place of these volcanoes. Spewing trillion of tons of carbon dioxide and other fine green house gases from the burning of oil and coal.
But man has nothing to do with this warming trend. Right? you right wing wack jobs?