Reknowned scientist takes unpopular stance on global warming

Princeton physicist Freeman Dyson is not worried about global warming. He doesn't doubt things are getting hotter, but he does doubt that it's a serious problem. After all, plants love to breathe in CO2.

What does Dyson think of the current level of sceince on global warming? "Enormous gaps in our knowledge, the sparseness of our observations and the superficiality of our theories..."

Dyson is particularly scornful of computer models "predicting" the future. Even so he's hopeful that solar power will eventually replace coal as the major energy source for most countries.