Prolonged contact with nickel-containing objects can cause skin rashes ... reduce their exposure to nickel by avoiding sources of pollution and maintaining good personal hygiene.

That’s why he is refining air quality measurement methods to identify the sources of air pollution, as well as which locations suffer from the most pollution. “A lot of it is anecdotal.

That’s why he is refining air quality measurement methods to identify the sources of air pollution, as well as which locations suffer from the most pollution. “A lot of it is anecdotal. Everyone knows ...