The world's largest coronavirus lockdown is having a dramatic impact on pollution in India

(CNN)When India imposed a nationwide lockdown a week ago, it was designed to stop the imminent spread of the novel coronavirus. But grinding this country of 1.3 billion people to a near halt has also provided a temporary remedy to another pressing health issue: suffocating pollution levels. The world's largest lockdown means all factories, markets, shops, and places of worship are now closed, most public transport suspended and construction work halted, as India asks its citizens to stay home and practice social distancing. So far, India has more than 1,300 confirmed cases of Covid-19, including 35 deaths. Already, data shows that the main cities are recording much lower levels of harmful...