In a paper discussing neurobehavioral effects of developmental toxicity, researchers note that in addition to the usual suspects, such as lead and mercury,
Since 2006, epidemiological studies have documented six additional developmental neurotoxicants—manganese, fluoride, chlorpyrifos, dichlorodiphenyltrichloroethane, tetrachloroethylene, and the polybrominated diphenyl ethers.
But during the Great Portland Fluoride Fight last year, opponents were accused of ignoring science (in addition to the generous application of slurs and insults hurled). To proponents, as with Mann-made global warming, The Science Is Settled™. Oddly, the effort lost, Portland (and suburban water purchasers) remain without fluoridated water, and it seems that the science is a little less settled than claimed by proponents.
And on the global warming front, there's a reason why the popular take is that The Science Is Settled™: the main broadcast networks simply failed to include any skeptical scientists in their news programming for at least 1300 days, while including alarmists on a regular basis. This despite the fact that there are thousands of scientists who disagree with the Mann-made global warming hypothesis.
Moreover, even back when they did put such people on, the netwoks portrayed them as "out of the scientific mainstream", backed by oil and coal companies, etc. Oddly, the alarmists are largely backed by government grants, so a thinking person might suspect the independence of their "findings"; especially given the evidence of data manipulation and collusion arising from the "climategate" email fiasco.
In some cases, the broadcast networks have failed to include such scientists for years, while including alarmist scientists within the past six months. ABC, CBS and NBC's lengthy omission of scientists critical of global warming alarmism propped up the myth of a scientific consensus, despite the fact the many scientists and thousands of peer-reviewed studies that disagree - See more at: http://cnsnews.com/mrctv-blog/sean-long/cold-shoulder-abc-cbs-exclude-scientists-critical-global-warming-more-1300-days#sthash.2pbUCylQ.dpuf