Mainly because they are absolutely clueless about the physical world (and by observation not too flash when it comes to the financial one either)
Moreover, they mistake carbon dioxide emissions as costs rather than the tremendous good they are for both humanity (boosting crop growth) and wildlife (increasing primary productivity and protecting more wild lands from the plow). Since they start from such a flawed premise they have no hope of ever getting the economics of energy and society anywhere within the ballpark.
Right now, natural gas is so abundant and cheap that some worry the U.S. and Canada, which has large reserves north of those in the U.S. Midwest, may soon run out of storage capacity. Some companies have even announced plans to curtail drilling due to falling prices and oversupply.
Damn you, seagrass munchers! “Mowing down seagrass meadows will cut loose carbon“
He must be thinking about the 400,000 nuclear bombs of added heat going into the ocean every day. Each time one explodes, it whispers “nutcase” in Hansen’s ear.
The Earth has been facing imminent doom since Earth day, 1970. The door to rescue the planet is always about to close.
Yes, you read that correctly – you’d panic about an insignificant rise in an artificial metric if only the story was told correctly