Microsampling Air Pollution

Near the corner of Tillary and Jay Streets in Brooklyn, Michael Heimbinder stood near a blue mailbox, head down, poking at his smartphone. A graph appeared: a single line plotting ambient carbon monoxide exposure in the neighborhood. Minutes later, he ran over to an idling Honda Pilot and held a small, black sensor to its tailpipe. On his phone, carbon monoxide levels, predictably, jumped off the chart. A woman opened the car door and said, “Can I help you out?”


The New York Times.