This is an article from Alternative Medicine magazine on paleo diets. I
thought it was well done -- except for the evolution mumbo-jumbo <g> -- and
would make a good introduction to the diet for newbies. It was too long to
post to the list, so I stuck it on the web. Here is the link:

http://www.vitaminb17.org/paleo_diet.htm

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Also, the LA times has a good article on farm raised
Salmon that is pretty good (Free registration required, I think):

http://www.latimes.com/la-me-salmon9dec09,0,6535872.story

A couple of paragraphs from the article:

PORT McNEILL, Canada -- If you bought a salmon filet in the supermarket
recently or ordered one in a restaurant, chances are it was born in a
plastic tray here, or a place just like it.

Instead of streaking through the ocean or leaping up rocky streams, it spent
three years like a marine couch potato, circling lazily in pens, fattening
up on pellets of salmon chow.

It was vaccinated as a small fry to survive the diseases that race through
these oceanic feedlots, acres of net-covered pens tethered offshore. It was
likely dosed with antibiotics to ward off infection or fed pesticides to
shed a beard of bloodsucking sea lice.

For that rich, pink hue, the fish was given a steady diet of synthetic
pigment. Without it, the flesh of these caged salmon would be an
unappetizing, pale gray.

While many chefs and seafood lovers snub the feedlot variety as inferior to
wild salmon, fish farming is booming. What was once a seasonal delicacy now
is sometimes as cheap as chicken and available year-round. Now, the hidden
costs of mass-producing these once-wild fish are coming into focus.