Study shows lower ozone pollution in Sao Paulo when drivers ... They suggest this happens because ozone chemistry in São Paulo is restrained by high concentrations of nitrogen oxides and also the ...

Health outcomes of Sao Paulo's beltway. ... For example, nearly 40 per cent of London's total nitrogen oxides emissions is attributed to diesel vehicles. Relative to North America, ...

What is nitrogen hypoxia? Hypoxia is a medical term for a state of insufficient oxygen in the body. Nitrogen, a colorless, odorless gas, makes up about 78 percent of the air inhaled by humans.