>>shepard: big changes coming to the sun screen aisle. the food and drug administration announcing new rules and officials say that will simplify choices and eliminating bogus claims. or, that is the goal. the agency will require sun screen makers to test their products against two kinds of harmful rays. not just one. those are the uva and uvb. who knew they were doing that already? the rules will force companies to stop marketing them as "waterproof," or "sweat proof," because the f.d.a. officials call that exaggeration. gee, you think? and those with a sun protection factor of 15 or lower carry a warning label that they will not protect against sun canner --