This just in my inbox from organicapparel.net.
"Even though the "standard" for apparel printing is the use of plastisol inks, it is a petroleum based product that needs some pretty nasty solvents to clean it up. If you're thinking about using environmentally responsible apparel this year (organic cotton, bamboo, recycled, etc): ie "green", why not print with environmentally responsible water base ink: ie "green"?
That's right folks! Choose design screened with water based inks!
(yes, I use water based inks)