Chill out

Bjorn Lomborg sobre el “calentamiento global”:

All eyes are on Greenland's melting glaciers as alarm about global warming spreads. This year, delegations of U.S. and European politicians have made pilgrimages to the fastest-moving glacier at Ilulissat, where they declare that they see climate change unfolding before their eyes.

Curiously, something that's rarely mentioned is that temperatures in Greenland were higher in 1941 than they are today. Or that melt rates around Ilulissat were faster in the early part of the past century, according to a new study. And while the delegations first fly into Kangerlussuaq, about 100 miles to the south, they all change planes to go straight to Ilulissat -- perhaps because the Kangerlussuaq glacier is inconveniently growing.

I point this out not to challenge the reality of global warming or the fact that it's caused in large part by humans, but because the discussion about climate change has turned into a nasty dustup, with one side arguing that we're headed for catastrophe and the other maintaining that it's all a hoax. I say that neither is right. It's wrong to deny the obvious: The Earth is warming, and we're causing it. But that's not the whole story, and predictions of impending disaster just don't stack up.

We have to rediscover the middle ground, where we can have a sensible conversation. We shouldn't ignore climate change or the policies that could attack it. But we should be honest about the shortcomings and costs of those policies, as well as the benefits.