April 04, 2024

As India’s summer begins, understanding the heat and health conundrum

Heatwaves are deadly natural hazards: they have multiple direct impacts and their indirect effects include disrupted power and water supply, more food- and water-borne diseases, and overburdened hospitals

A mother protects her child from heat by covering his head, while returning from school in Visakhapatnam, March 13, 2024.

Anthropogenic climate change is turning ambient heat, a relatively banal manifestation of the sun, into an inevitable environmental hazard. In 2023, with the atmospheric carbon dioxide level reaching new heights of 425 ppm, we witnessed the warmest decade on record spanning from 2014 to 2023. Until a few decades ago, hazards of high heat largely existed in confined, fire-based occupational settings or for people who exerted in hot weather for a long time, e.g. soldiers, athletes, and workers, and during occasional heatwaves.

Mentions of heat stroke have been found in literature since ancient times. With rising global temperatures, dangerous high heat has begun permeating our routine indoor spaces. This gradual expansion of the realm of extreme heat is potentially the gravest consequence of climate change for India.

https://www.thehindu.com/sci-tech/energy-and-environment/india-summer-heat-heatwave-health-indirect-impacts-preparation/article68015107.ece


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