| 如何向学生解释气候变化问题：美国教育家面临挑战-2 As a result, teachers are often on their own. Some have shown Al Gore's Oscar-winning film, An Inconvenient Truth , to their students. Other teachers find material online. In some classrooms, teachers are using an interactive exercise called Stabilization Wedges, developed at Princeton University. The wedges are a visual stand-in for steps we can take to avoid the continued increase in the carbon emissions that contribute to global warming. One wedge might represent more fuel-efficient cars; another might represent nuclear energy. Using wind or solar power might be another choice, and each choice has its tradeoffs . At the AAAS meeting, Roberta Hotinski led some 500 scientists, educators, and others, each with a wireless voting device, through the exercise. In the first round, more than two-thirds agreed on their first choice Hotinski: So, increased efficiency, by a lot. Usually it comes up in the games. It's a popular, popular strategy. So now we've got one wedge of increased efficiency. Now that could mean really intense efforts in, say, doubling the fuel efficiency of passenger vehicles or less intense efforts across transport, buildings, and efficiency. There are really no right or wrong answers about how to reduce carbon emissions. The Stabilization Wedges game is about getting students or grownups to think about the challenge, as this audience member noted in the follow-up question-and-answer session. "OK, first of all I want to thank you for the game. I think it really helped me to see what I'm personally willing to give up. And then also how we as a community, what we're willing to do as a community, not just as individuals." And any and all tools may be needed to meet the challenge of climate change, which AAAS president John Holdren described as "maybe the most difficult problem of any kind" that civilization has ever created. |
