In heat waves, chemicals like formaldehyde and ozone can form more readily in the air, according to researchers driving mobile labs in New York City this week.
Industry groups said the E.P.A. had exceeded its authority in requiring the drinking-water cleanup. The chemicals, known as PFAS, are linked to cancer and health risks.
At an industry presentation about dangerous βforever chemicals,β lawyers predicted a wave of lawsuits that could dwarf asbestos litigation, audio from the event revealed.
Gas-burning ranges, a significant contributor to indoor pollution, can produce and spread particularly high levels of some pollutants in smaller spaces.
The Biden administration is tightening efficiency rules for water heaters, stoves and other appliances, and conservative politicians are dialing up their criticisms.