Do you live close enough to a small US airport to have lead exposure? Check our maps

Quartz – At in the heart of Silicon Valley filled up their tanks with a heavy metal most Americans assumed was banished long ago: lead. Reid-Hillview was not unusual in this respect. Virtually every small airplane in the US burns fuel containing tetraethyl lead (TEL), an additive introduced in the 1920s to boost octane levels. […]