Pedal Power video from CBS Sunday morning

"Pedal Power" is coming into its own these days, as Americans of all ages are coming to realize biking can be practical, economical, and good clean fun - or should we say, good GREEN fun? Our Cover Story takes us from California to Cambridge, and is reported by Serena Altschul

"Learn to ride a bicycle," Mark Twain once wrote. "You will not regret it if you live."

On a cool Summer morning, a dozen bicyclists are living the good life on two wheels. Their backroads tour out of Sonoma, Calif., takes them through wine country.

"There's really no better way to see something, to see a place really well than by biking," said one rider. "You're presented with the smells and sounds of nature. For me, this is a very Zen ,relaxing thing."

Relaxing, and refreshing.

Today's ride of about 40 miles is new for some ("I actually am not a big biker<' admits one), and for others, it's just another day.

"We ride about 5,000 miles a year," one couple said. "A hundred miles a week."

A coast away, at the Bicycle Riding School in Somerville, Mass., a drama is unfolding as Sue Ghezzi and three other students are about to take the saddle for the very first time.

"Isn't that a shock - I've never ridden before," she said. "I grew up in New York City and I probably didn't see a bike until I was a teenager."

Full story and video: http://www.cbsnews.com/stories/2008/07/27/sunday/main4297624.shtml