March 28, 2023 8:43 PM
Transboundary solutions important to curb air pollution in South Asia: World Bank
<span style="color: #222222;">Concentration of fine particulate matter such as soot and small dust (PM 2.5) in some of &nbsp;South Asia's most densely populated and poor areas are up to 20 times higher than WHO standard of 5 microgram per cubic metre, say...