Sipping soda may not help your waistline. But taxing it could do wonders for schools' bottom line. In the Peninsula and South Bay, a tax could mean more than $86 million to tackle the epidemic of childhood obesity -- a welcomed infusion of money during a time of harsh budget cuts. A bill by Assemblyman Bill Monning, D-Carmel, would levy a tax on any beverage with added caloric sweeteners, such as soda pop, sweet teas and sports drinks. AB 669 proposes a tax of 1 cent per fluid ounce, which would raise an estimated $1.7 billion annually in California --...