Which scientists?? There are lots of scientists who are skeptical about global warming as "human caused"--they just don't get much press.
The earth is definitely warmer--but so is Mars. There ain't no "fossil fuel burning" there.
No--the difficulty is telling HOW MUCH of today's warming is human-induced, and how much is "nature-induced".
Exactly. And the danger is to allow one or the other 'political' party to be the one that wants to 'save the planet'; while the other 'evil' party supports 'big oil'...Pleeese.