Doomsday Clock

Remember these guys, the "Doomsday Scientists"? I guess they were tired of figuring out if dimes cause cancer in rats on your dime so they have combed out their ponytails, re-stickered their VWs and came out with a new time for the doomsday clock. In a desperate attempt to seem relevant, they now take into consideration global warming in their threat assessment. Somebody please hold me, I'm ascared!
At the risk of seeming insouciant, who gives a rats ass what this imaginary clock says? It's not like we can do anything about the threat of nuclear war short of nuking the living hell out of Iran, North Korea and Pakistan - just to err on the side of safety. Which is probably immoral and kind of defeats the idea of the clock to begin with. There is even less we can do about global warming. If the United States had zero carbon dioxide emissions it would not effect the earth's temperature one tenth of one degree. This at the cost of our economy, heated and cooled homes, travel, entertainment, pork, chicken, dairy and beef, electricity etc. Sounds like a bargain doesn't it?