Factors that affect ozone generation include solar radiation, humidity, precipitation and the presence of precursors – substances that lead to the formation of a pollutant through a chemical reaction – such as methane, nitrogen oxides and volatile organic compounds.
The authors stress that individual knowledge alone is insufficient. Food environments – marketing, pricing, availability and access – must support healthier choices.
Aviation crews remain stationed near their hangars, radar screens remain trained on western horizons, and some 30 million residents across the capital region wait to see whether engineered clouds can offer a rare gasp of clean air.
The authors stress that individual knowledge alone is insufficient. Food environments – marketing, pricing, availability and access – must support healthier choices.