We need a firm cap on carbon emissions from fossil fuels. No coal, oil, or gas could enter the economy until the buyer had a permit. All permits would be auctioned by the federal government, and the number of permits auctioned would be decreased by three percent per year. Permits could be traded, but they could not be created out of whole cloth by companies that plant forests or dump iron filings at sea.

Politicians had always viewed environmental issues as narrow things of no great political consequence. Sort of NIMBY issues. A big part of the reason was that the groups that cared about wilderness didn't talk with the groups that were trying to stop freeways from cutting through inner cities, and neither of them talked to the folks who wanted to stop the military from dumping Agent Orange on Vietnam.

By 1975 - and continuing to today - all Americans came to believe that they had a "right" to a safe, clean, healthy environment. When I grew up, no one seriously criticized the steel mills and paper mills for the deadly stench they produced - that was the smell of prosperity. In the modern society, no one would tolerate such conditions in an American city.

When we held the first Earth Day, everyone said it was a success because of the huge turnout. It was probably the largest planned event across the country.

Make Earth Day Every Day.” While we might not always live up to this ideal, I try to keep this quote from Denis Hayes, founder of the Earth Day Network and president of Seattle’s Bullitt Foundation, in mind when I need a little extra motivation to be a better environmentalist: “Listen up, you couch potatoes: each recycled beer can saves enough electricity to run a television for three hours.

Sustainability requires that we demand enduring quality. Steve Strong has a slide presentation pointing out that much of Oxford was built 800 years ago. What are we building today that will be here 800 years from now? If something like that emerged from this recession, it would help justify the hardship so many people are currently experiencing.

An aggressive building performance standard for all new buildings, and a set of performance requirements to be met by all buildings before they can be sold (when upgrades can be included in the new mortgage). These should encompass heating and cooling, lighting, and plug loads. Coupled with new efficiency standards for appliances, lights, and furnaces, this should reduce the energy consumption of new buildings by 50 percent, more or less immediately, and go on from there.