Braaivleis, sunny skies and extremely toxic gunk

South Africans are breathing toxic air. And communities living near factories or plants belching pollutants into the air are breathing in concentrations of airborne particles five times greater than levels recommended by the World Health Organisation. The WHO yesterday released its air quality limits map which showed that Johannesburg and Tshwane communities were exposed to almost five times more fine-particle pollution than allowed by the existing national ambient air quality standard of 25?g/...