Why?

"We believe that the human cost of climate change is too great to ignore."

One sided? Balanced? I don't think so.

If you go WAY back...past the last the 1,000 years they use...the earths temperature has been higher...it's also been MUCH colder.

Do you think that the ice ages have stopped and we'll never get another? If you do...then you are ignorant to the natural cycles the earth goes through. If you don't...if you think someday the ice age will be back...as it's been doing FOREVER...then what are you worried about? You're aware that the earth goes through temperature cycles and this too will pass.

CO2 has very little to do with global temperature. The CO2 scare is a scam. They found something to blame the current natural warming on. So they can MAKE MONEY off it.

"Out of the entire atmospheric makeup, only one to two percent is made up of greenhouse gases with the majority being nitrogen (about 78 percent) and oxygen (about 21 percent). Of that two percent, “planet-killing” carbon dioxide comprises only 3.62 percent while water vapor encompasses 95 percent."

Which means...greenhouse gasses makes up only 1-2% of the atmosphere AND CO2 only makes up 4% of that small 1-2% of greenhouse gasses. CO2 makes up 0.04% of the total atmosphere...it's nothing...and it does nothing. WATER VAPOR is what determines heat retention. We pump a LOT of water vapor into the air but evaporation is the biggest contributor.

"The Earth's atmosphere is 78 percent nitrogen, 21 percent oxygen and 1 percent other gases, including about 0.04 percent carbon dioxide."

Man isn't helping... There's a lot more crap being pumped into the air a LOT worse than CO2. And it ain't by us. SE Asia is the biggest contributor to air pollution. China...India...are both causing a LOT of pollution.