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VOL. I · EST. 11.2025 
SatyaDheesh
सत्याधीश
India's Ground Truth Record
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‘Non-survivable’: heatwaves are already breaching human limits, with worse to come, study finds

GS3Economy · S&T · Environment · Security· Nuclear & new energy technology· Prelims + Mains·

Why in news

A study by the Australian National University found that heatwaves between 2003 and 2024 caused non-survivable conditions for older people even before reaching traditional wet-bulb temperature limits.

Background

The research analyzed six extreme heatwaves occurring between 2003 and 2024. Lead author Prof Sarah Perkins-Kirkpatrick noted that heat-related deaths are likely underreported due to the vulnerability of older populations lacking access to shade.

Facts for Prelims

  • FactThe study analyzed six extreme heatwaves occurring between 2003 and 2024.
  • S&TWet-bulb temperature is the traditional limit used to determine non-survivable heat conditions.
  • PostProf Sarah Perkins-Kirkpatrick is the lead author of the Australian National University study.

For Mains

Q. Discuss the physiological and infrastructural challenges posed by extreme heatwaves on vulnerable populations in the context of global climate change.

Dimensions to cover in your answer

  • Demographic vulnerability: Higher mortality rates among elderly populations lacking access to cooling infrastructure
  • Data gap: Underreporting of heat-related fatalities complicates accurate climate adaptation planning
  • Infrastructure deficit: Lack of public shade and cooling centers in urban heat islands

Keywords: Climate Adaptation · Vulnerable Populations · Heat Stress · Public Health Infrastructure · Climate Resilience

Read the full news →Report a mistake in this noteSource: The Guardian ↗Also: GS3 · Climate change & international agreementsAlso: GS2 · Vulnerable sections (SC/ST, minorities, disabled, elderly, children)

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