Large parts of South America are facing the most severe drought in nearly a century. At threat is one of the largest waterways in the region, the Paraná water system that millions of people in Brazil, Paraguay and Argentina rely on for water and energy. The reason, say climatologists, is La Niña, a natural phenomenon that disrupts weather patterns. But there are also other factors at play – like deforestation further north in the Amazon jungle.
With 2021 set to be one of the hottest years recorded on earth, some big cities are struggling with rising temperatures. This can cause respiratory problems, exhaustion and heat strokes.
But in Pakistan, whilst some struggle with air conditioning, one man is trying to find a solution by planting urban forests.
Farhat Javed reports from Karachi for the BBC’s Life at 50C season.