Global warming a tough sell for the human psyche

One big reason: It's hard for people to get excited about a threat that seems far away in space and time, psychologists say.

"It's not in people's faces," said psychologist Robert Gifford of the University of Victoria in British Columbia. "It is in the media, but not in their everyday experience. That's quite a different thing."

The consequences of global warming are seen as occurring in far-off places, he said: "It's happening up in the Arctic or it's happening in Bangladesh, and it's not happening in my backyard." And the slow changes are not as attention-grabbing as a "fast disaster" like an earthquake, he said.

As it happens, those urgent-seeming U.N. talks have bogged down over political differences. But recent surveys suggest that Americans are not exactly consumed by concern over climate change.

In October, the Pew Research Center for the People & the Press said its poll found that only 35 percent of Americans considered global warming to be a very serious problem, a decline from April 2008. Thirty percent called it "somewhat serious."

In a poll by The Associated Press and Stanford University, published this month, more than half said they would not support a "cap-and-trade" program to reduce global warming gases if it raised their energy bills by $10 a month. Cap-and-trade would essentially allow industries to buy and sell the right to pollute.

Some skeptics, of course, cite their own analyses to question whether greenhouse gas emissions are really an urgent problem that needs to be fixed. And their opinions on the Internet have influenced others.

But beyond that, psychologists say, the nature of climate change itself makes it a tough sell for many people.

Janet Swim, a psychology professor at Pennsylvania State University, recalls a conversation from last month with a taxi driver in Cape Town, South Africa.