North of the chemical equator

If you live in the northern hemisphere, and most people do, you will be breathing a different and poorer quality of air than if you live in the southern hemisphere. Researchers from the University of York have found that roughly coincident with the equator (but not completely) there is another imaginary line – a chemical equator – which divides air with poor quality in the north from air with better quality in the south. This is probably the only north-south divide that favours the south. Continue reading