Poop wanted!

Now there's a headline that's irresistable.

Turns out, they're serious. Forget ethanol. Pooch poo power is the coming thing. American dogs produce 10 million tons of poop every year. It's free. And it's valuable. One ton of dog doo will produce 50 gallons of diesel-equivalent fuel, which is enough to heat a house in New England for 2 days.

This is known as animal waste technology, and European farmers have been doing it for the past 20 years. (Of course, Chinese farmers have been doing it for 5000 years) Now, San Francisco has decided to give it a try. This makes sense, because there are more dogs than kids in San Francisco and dog poop constitutes 3.8 percent of the collected garbage. San Francisco doggie doo will be collected and processed in methane digesting machines, where -- after bacteria have broken down the wastes -- the methane gas that's produced will be piped to stoves, heaters and anything else that can be powered by natural gas.

Our morning walks will never be the same!