This could be the end of the line for flame retardants. As the EPA launched an investigation into the chemicals, Washington state banned flame retardants from kids’ products, and California announced a move to update the state’s flammability standards, pressured by those concerned about a policy that had exposed millions of people to toxic flame retardants—also known as PBDEs—in our homes. What’s the big deal about California? Because the state represents such a large market, California’s flammability standards—governed by TB117, which was adopted by the state 40 years ago—have become a national standard, essentially forcing furniture and baby product manufacturers throughout North America to add chemical flame retardants to their…