My friend Emily DeVoto has a marvelous blog, The Antidote: Counterspin for Health Care and Health News. It is exactly what it sounds like, a critical take on health and health care news. On Nov 30 she posted something that I thought I'd pass along: Something's Fishy.
The gist of it is that while it's good for our health to eat fish, some fish are being over-fished for their survival. That hardly seems fair, and beyond fairness, long term it could be really bad news. Her blog entry includes a PDF with a neat little fold-out thingie for your shopping bag that tells you which fish are your best buy from a survival point of view (ours and theirs.)
The good news, as far as I'm concerned, is that anchovies are still on the menu. I realize that may not thrill everyone, but I'm happy. Sardines are good, as is carp. The "big three," shrimp, tuna, and salmon, are more problematic (for more info, read her post and the PDF.)