Behold the very full bike rack at Marshall High School, which is close to where we live in Los Angeles. It looks like a train station in Amsterdam. Like the photo of airplane factory workers I posted last week, this photo is a reminder of how our streets have changed in the post WWII era. Make those streets safe once again for kids to walk and bike and we could really put a dent in obesity, diabetes and heart disease rates. Photo via Jeff Jacobbe...