An acre of windy prairie could produce between $4,000 and 10,000 worth of electricity per year - which is far more than the value of the land's crop of corn or wheat.

There was almost a universal acceptance of unhealthy conditions. Sulfur dioxide in smokestack emissions were the price, or smell, of prosperity.

An acre of windy prairie could produce between $4,000 and 10,000 worth of electricity per year - which is far more than the value of the land's crop of corn or wheat.

Asbestos, EMFs, and CFCs have given us a degree of humility. When yesterday's "triumph of modern chemistry" turns out instead to be today's deadly threat to the global environment, it is legitimate to ask what else we don't know.

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.

I would love to see a fundamental re-thinking of whether we truly want to be the world's largest debtor nation, feeding an insatiable desire for mall-crawling with cheaply made crap from all over the world.

There really wasn't an environmental movement 30 years ago. The Sierra Club national office in 1969 consisted of one full-time volunteer.