The 48° Celsius ceiling: it could cap India’s economic emergence

We must stop treating climate change as an environmental nuisance and address it in crisis mode

- EJAZ GHANI

Viksit Bharat is not a distant ambition; it is an active economic sprint being run on a worsening track.

Viksit Bharat is not a distant ambition; it is an active economic sprint being run on a worsening track. As record-breaking heat domes breach 48° Celsius, the Indian economy is at risk. Productivity could evaporate as people labour under a ‘metabolism tax,’ a levy that no administration can cut but weighs GDP growth down.

That the biological effect of heat and humidity can throttle growth is slowly becoming apparent. Just as an engine slows if its cooling system fails and it begins to overheat, a vast proportion of the Indian workforce is experiencing exhaustion. The human body’s biological cooling system of evaporative perspiration breaks down if humidity and heat are both high—and if ‘wet-bulb’ temperature rises above the ‘survival ceiling’ of 35° Celsius, it could prove fatal. Climate change has gradually been raising humidity and heat both, exposing Indian workers without air-conditioning to a thermal shock.

For the country’s 490 million informal workers, a tax that never appears on a ledger is threatening to crush their productive capacity. If India cannot protect this human capital, its ‘demographic dividend’ risks becoming a liability. By one estimate, the country loses 160 billion labour hours annually to extreme heat. This is a crisis.