urinene which are th major bioindicacators, it indicatetes there isis going to an effect on t the brarainpeo have lower i.q. levels. they have balance issues, aggressiveness issues. they have problems with heararing, with sight, with taste. much of the mercury that's used in the process of concentrating that gold is lost, dumped into the rivers and lakes of the area that you have the mining. mercury has the unusual ability of concentrating and magnifying. and as it moves up the food chain as one animal eats another, in this case fish, it concentrates and accumulates. they have concentrations that are millions or tens of millions of times higher than the water that they live in. it's a perfect mechanism to be able to concentrate it in a form that affects the next consumer, and in many cases hose are people. the carnenegie insnstitution fo science has crubblblingted -- conducted research since 2008 and found the levels of mercury are increasing in line with the gold production that's been occurring in the region. in a study published in match in the we found that capital, not 60% of the spe