India

The poaching crisis extends to elephants, India's National Heritage Animal. In the Malayattoor forest division of Kerala, between 2013 and 2015, at least 18 elephants were slaughtered for ivory.

As birth rates fall and rural migration slows, cities are aging and – in some cases – beginning to shrink.

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.