It's about time that we as a species put a bit more attention to the various pollutants that we pump into the air. We don't have much of a lead problem, but we'

It's about time that we as a species put a bit more attention to the various pollutants that we pump into the air. We don't have much of a lead problem, but we're putting a lot of microplastics (e.g. from tyres) into the air and it's ending up everywhere.