Friday, April 4, 2008. Twenty years ago this week, the magazine Science News reported on ellagic acid, a substance found in berries and nuts, and how it might help prevent cancer. I talk about the article, and about the wide variety of 'superfoods' which have come and gone over the years. Wolfberries, or goji berries, are one of the latest superfoods, pictured here.

Our theme music is composed and performed by Marc Rose.