chris drake is general manager of joullian vineyards in carmel valley. in 2011, he was working in napa and he says radioactivity was not a concern that year, but cold wet weather was. chris drake, general manager, joullian vineyards: "it was a cooler vintage, and typically in cooler vintages there's more acid in wine, and acid's one of the things that allow wines to age."drake says the 2011's from napa are delicious today, and if you've got some lying around, scientists say don't worry about drinking it. caitlin conrad reporting: "the trace amounts were so minimal they actually had to burn the wine to find any of the cesium-137."in fact, experts in the field say there's more naturally occurring radioactive material in our bodies, then there are in the 2011 vintages. andrew waterhouse, uc davis chemist: "because your body contains potassium from the natural vironment, there's a tiny bit of radioactive potassium in there, and that actually produces hundreds of times more radioactivity than any of these wines." chemist andrew waterhouse runs a wine chemistr