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.

I suppose I'd characterize myself as having a faith-based optimism. My faith is parental and Darwinian.

Listen up, you couch potatoes: each recycled beer can saves enough electricity to run a television for three hours.

I feel more confident than ever that the power to save the planet rests with the individual consumer.

he economy favors throughput over quality and craftsmanship, and economists are terrified because the American savings rate has crept upward from about zero to almost five percent. But the mortgage crisis and the burgeoning credit card crisis are causing Americans to become wary of irresponsible debt.

There are a few obvious consequences and perhaps one subtle possibility. One obvious thing is that, to stimulate the economy, President Obama has committed to creating millions of green jobs that will leave a legacy - much as Roosevelt's public works did during the new deal.

These are not exhortations from overwrought extremists, but carefully phrased warnings from some of the world's finest scientists.