Published: Aug 21, 2024, 20:35 IST | Updated: Aug 21, 2024, 20:35 IST
Residents of Porto Velho in the Brazilian amazon have barely seen sunlight in days and this comes as a thick cloud of smoke from forest fires envelops their city. The concentration of cancer-causing microparticles known as pm 2.5 reached 56.5 micrograms per cubic meter of air in Porto Velho...