A major river in Sao Paulo, Brazil, has taken on an emerald green hue due to an algae bloom caused by a severe drought lowering water levels. The city's skies have turned grey from blue, with the sun appearing as a deep orange due to smoky haze.
The state's environmental authority has linked the river's color change to the drought, which has also led to smoke-filled air in the city. The smoke is a result of a hot, dry mass hindering the dispersal of pollutants from ongoing wildfires in forested areas.
