Frozen soda can explosions are not due directly to water expanding as it freezes, but to the resulting pressure put on an isolated pocket of C02.

A proposed law in California would require sodas and other sugar-sweetened beverages to carry a warning label describing the potential health risks of the beverages.

The label, proposed by democratic State Senator Bill Monning, would read: "STATE OF CALIFORNIA SAFETY WARNING: Drinking beverages with added sugar(s) contributes to obesity, diabetes, and tooth decay," according to the California Medical Association, which is backing the bill. The wording was developed by a panel of nutrition and health experts.

"As with tobacco and alcohol warnings, this legislation will give Californians essential information they need to make healthier choices," Monning said in a statement.

Drinking one soda a day increases an adult's risk of being overweight by 27 percent, and a child's risk by 55 percent, the Medical Association said.

The California branch of the American Beverage Association, CalBev, opposes the bill, saying that obesity is a complex issue, and that many soda products already have calorie counts on the front of the bottle, according to the Los Angeles Times.