[mugwump]

To continue the water/resistance theme: All that Tamiflu they are making to fight bird flu (tons and tons of it). When you take it, you pee 80% of it out unchanged. There's going to be massive amounts in the water (although extremely dilute) if this flu thing happens and all that tamiflu gets eaten. There's a paper in Nature that speculates the wild virus in birds will quickly develop resistance to it (the resistance is developing already, a consequence of the Tamiflu "blanket" they are using in Indonesia to try to stop it).

Weirdly enough, birth-control hormones, hypertension meds, etc. get peed out unchanged and are building up in the water supply as well. Pretty much every chemical made ends up in the water. And they wonder why eight year-old girls are going through puberty.