Meet Archishman Dey, the Ohio eighth-grader who tested an air fryer, candle, humidifier, gas and incense; incense produced the most fine-particle pollution

Ohio eighth-grader Archishman Dey investigated how everyday household activities affect indoor PM2.5 pollution. Testing an air fryer, candle, humidifier, natural gas and incense, he found incense produced the highest average levels, followed by the air fryer.…