Pretty much anyone who believes that there is human-caused global warming also believes that the earth goes through long cycles of warming and cooling.
So why are they so adamant about stopping human-caused global warming? Its not like there is anything we can do to affect the temperature of the earth all that much, except nuclear weapons.
Are they really trying to get our panties in a bunch about gradual increases in ocean height relative to shoreline? That sounds as nerdy as trying to start a global campaign to fight underwater frozen methane formations from thawing.
But that's about all they do. In fact, here is their main point:
"Global warming is happening. In 20-30 years, going outisde for 10 minutes means severe burns. Carbon dioxide is destroying the ozone layer, which is melting the polar ice caps, thus making it hotter on earth, the sea level is rising, and in about 50 years, if Greenland and west Antarctica melt, the twin tower memorial will be underwater, Florida's coast will be underwater more than 200 miles from where it is now. I can go on, and on about this! If you wanna know more, go to www.stopglobalwarming.org"
Here's another one "Consequences will probably affect us directly, because we will live in a warmer world, with less water, in a world with damaged flora and fauna."