Experts and documents cast doubts on whether industry and Ontario government are revealing levels of benzene in areas where residents live right near oil and gas facilities.
Read MoreScientists have been studying the impact of chlorpyrifos on brain development in young rats under controlled laboratory conditions for decades. These studies have shown that the chemical has devastating effects on the brain.
Read MoreMore than 7,500 men had worked at the plant since it opened in 1941. Tracking those who had died was a daunting task. It took three years, but scientists at OSHA and their brethren at the National Institute for Occupational Safety and Health, or NIOSH, would discover 23 brain-tumor deaths there — double the normal rate. It was the largest cluster of work-related brain tumors ever reported, and it became national news, catching the attention of The Washington Post, The New York Times, and even Walter Cronkite.
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