To claim that human activity can cause global warming implies that human activity can also cause global cooling. If true, we should be able to do either with equal ease. To assert that one-half of 1 percent atmospheric carbon dioxide can block the passage of Earth-surface heat into the vast heat sink of outer space is like saying that we can scoop the Pacific Ocean into a bucket with a fishnet.

Don't you remember? Your mother couldn't get you to do anything unless she frightened you with an imaginary monster. It's the same with us grown-ups. We need the imaginary carbon-dioxide, global-warming monster to scare us into doing the right things.

Wally Haynes

West Valley City