One billion people will face heat-stress risk from 2°C rise.
According to a new study by the British Aeronautical Center published in # COP26 The number of people in regions across the world affected by extreme heat stress – a potentially fatal combination of heat and humidity – could increase nearly 15-fold if the world’s temperature rise reaches 2°C.
This can lead to the fact, that the number of people living in areas affected by extreme heat stress can rise from 68 million to around one billion. A 4.0°C rise could see nearly half of the world’s population living in areas potentially affected.
The indicator used for this assessment of a wet-bulb globe temperature above 32.0°C is part of the international standard for measuring heat stress in working environments. Above these levels, increased rest time is recommended per hour in order to avoid heat exhaustion.  
The findings are revealed as part of a series of maps showing regions affected by five different effects of climate change at 2.0 °C and 4.0 °C. The others are river flooding, risk of wildfire, drought, and food insecurity.
For more details follow the link: https://bit.ly/3qiPt6X