THE CONVERSATION - Across the U.S., children and adults are increasingly exposed to harmful chemicals from a source few people are even aware of. It begins on a street outside a home or school, where a worker in a manhole is repairing a sewer pipe. The contractor inserts a resin-soaked sleeve into the buried pipe, then heats it, transforming the resin into a hard plastic pipe. This is one of the cheapest , most common pipe repair methods, but it comes with a serious risk: Heating the resin generates harmful fumes that can travel through the sewer lines and into surrounding buildings, sometimes several blocks away. These chemicals have made hundreds of people ill , forced building evacuations, and even led to hospitalizations. Playgrounds , daycare centers, and schools in several states have been affected, including Colorado , Connecticut , Massachusetts , Michigan , Pennsylvania , Washington , and Wisconsin . With the 2022 Bipartisan Infrastructure Law now
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