Mutated Trout (4 eyes, *not* 3) Raise New Concerns Near Mine Sites

[eppur_se_muova]

1. Selenium is well-established as a teratogen ...

IIRC, this was in part because of discovery of large numbers of deformed bird embryos in wetlands where selenium had accumulated due to evaporation in a desert lake with no outlet.

http://en.wikipedia.org/wiki/Selenium#Toxicity

(To split hairs, these are most likely deformed trout, not mutated -- their deformities are probably not heritable, i.e. if they had offspring in an environment lacking Se, the offspring would probably be normal. A teratogen specifically interferes with the development of embryos from normal DNA; a mutagen alters DNA, producing heritable changes.)