What is the common examiner trap about Environment in UPSC exams?

They may confuse 'additional heat stress days' (attributable to climate change) with 'total heat stress days' (including natural variability). Or swap 'children aged 0-9' with 'children aged 0-14' or 'adults aged 60-69'.

What should UPSC aspirants remember about Environment for Prelims?

1. Target this Data: 145 million Indian children (0-9) face additional heat stress due to climate change. 2. Target this Institution: Vrije Universiteit Brussel (VUB) conducted the study published in Science Advances. 3. Target this Threshold: Wet-bulb globe temperature > 28°C (shade) defines a heat stress day.

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Climate Change: 145 Million Indian Children (0-9) Face Heat Stress Risk, VUB Study Warns

Q: The study on heat stress among children was conducted by which university?

Vrije Universiteit Brussel (VUB), The study was led by Rosa Pietroiusti and Wim Thiery from Vrije Universiteit Brussel (VUB), as mentioned in the article. The findings were published in the journal Science Advances.

Q: Consider the following statements regarding the study on climate change and heat stress: 1. The study defines a heat stress day as a day when the wet-bulb globe temperature in the shade exceeds 28°C. 2. The study found that globally, 560 million children aged 0-9 experience at least one additional month of heat stress due to climate change. 3. The study concluded that children aged 10-19 are at higher risk than children aged 0-9. Which of the statements given above is/are correct?

Both 1 and 2, Statement 1 is correct: the study defines heat stress days as having a wet-bulb globe temperature >28°C in the shade. Statement 2 is correct: globally, 560 million children (43% of 0-9 age group) are affected. Statement 3 is incorrect: the study specifically focuses on children aged 0-9 and states they are more vulnerable than older age groups, not that older children are at higher risk.

Q: According to the VUB study, how many Indian children (aged 0-9) are projected to experience at least one additional month of heat stress in a 2°C warmer world?

169 million, The study projects that in a 2°C warmer world, 169 million Indian children (96% of those aged 0-9) could experience at least one additional month of heat stress. 145 million is the current number, and 166 million is the projection for 1.5°C warming.

Q: Why is humid heat considered more dangerous than dry heat for children's health?

Because high humidity prevents sweat from evaporating, impairing the body's cooling mechanism., The article explains that humid heat is more dangerous because high humidity prevents sweat from evaporating efficiently, making it harder for the body to cool itself. This is especially critical for children, whose bodies heat up faster and sweat less efficiently than adults.

Environment Social Issues Health & EducationCORE

Target:UPSC GS-IIIMPSCTeachingSSC GAPrelims HighMains HighStatic GK Link

27 Aug 2026

~2 min

Source: Indian Express

Key Data:145 million Indian children560 million global children61% of Indian children aged 0-9Wet-bulb globe temperature > 28°C1.5°C warming projection: 166 million2°C warming projection: 169 million

Bodies:Vrije Universiteit Brussel (VUB)Warrior MomsAIIMS New DelhiUNICEF

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~2 min · Quick mode

What This Article Covers

1.VUB study in Science Advances finds 145 million Indian children (61% of 0-9 age group) face at least one extra month of heat stress due to climate change.

2.Children are physiologically more vulnerable: they heat up faster, sweat less efficiently, and depend on adults for protection.

3.In a 2°C warmer world, 96% of Indian children (169 million) could experience at least one additional month of heat stress.

The Big Picture

Prelims · HighMains · High

A new study reveals that human-induced climate change has pushed 145 million Indian children (aged 0-9) into at least one additional month of dangerous heat stress annually, making them vulnerable to dehydration, heatstroke, and developmental issues. The findings highlight the disproportionate impact on children, especially from low-income families, and call for urgent emission cuts aligned with the Paris Agreement.

Exam Lens

Quick Exam Facts From News

Study Published InScience Advances

Conducting InstitutionVrije Universiteit Brussel (VUB)

Indian Children Affected (Now)145 million (61% of 0-9 age group)

Global Children Affected (Now)560 million (43% of 0-9 age group)

Metric UsedWet-bulb globe temperature > 28°C (shade)

Projection at 1.5°C Warming166 million Indian children affected

Projection at 2°C Warming169 million Indian children affected (96%)

1-Minute Revision

›Study Published In: Science Advances
›Conducting Institution: Vrije Universiteit Brussel (VUB)
›Target this Data: 145 million Indian children (0-9) face additional heat stress due to climate change.
›Target this Institution: Vrije Universiteit Brussel (VUB) conducted the study published in Science Advances.
›Target this Threshold: Wet-bulb globe temperature > 28°C (shade) defines a heat stress day.

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News Snapshot

🌡️

Heat Stress Definition

The study defines heat stress as humid heat with a wet-bulb globe temperature above 28°C in the shade, requiring protective measures.

👶

Children's Vulnerability

Children's bodies heat up faster, sweat less efficiently, and they depend on adults for hydration and rest, making them physiologically more vulnerable than adults.

🏠

Inequitable Impact

Children from low-income families face heightened risk due to limited access to air-conditioning, cool spaces, and flexible routines.

Detailed Analysis & Strategic Depth

Context / Background

Climate change is intensifying heat waves globally, but this study from VUB, published in Science Advances, uses attribution science to isolate the specific impact of human-induced climate change on children's heat exposure. It focuses on humid heat, which is more dangerous than dry heat because high humidity prevents sweat evaporation, impairing the body's cooling mechanism. The study combines population data with state-of-the-art climate models to quantify the additional heat stress days attributable to climate change.

Core Analysis & Implications

The study reveals that 145 million Indian children (61% of those aged 0-9) now experience at least one additional month of heat stress annually due to climate change. This is nearly three times the number of people aged 60-69 (190 million, 30%) facing similar exposure. The implications are severe: excessive heat can cause dehydration, heatstroke, organ failure, and disrupt learning and cognitive development. The burden is uneven—low-income children in urban India, as highlighted by the Warrior Moms network, face compounded risks from heat and air pollution.

Future Outlook / Way Forward

Projections show that with further warming, the crisis will escalate. At 1.5°C warming, 166 million Indian children (74%) could experience at least one additional month of heat stress; at 2°C, this rises to 169 million (96%). The study underscores the need for drastic fossil-fuel emission reductions in line with the Paris Agreement to limit warming. Policymakers must integrate child-specific heat action plans, including school heat safety protocols, access to cool spaces, and public health interventions targeting vulnerable communities.

Key Facts at a Glance

Study Published InScience Advances

Conducting InstitutionVrije Universiteit Brussel (VUB)

Indian Children Affected (Now)145 million (61% of 0-9 age group)

Global Children Affected (Now)560 million (43% of 0-9 age group)

Metric UsedWet-bulb globe temperature > 28°C (shade)

Projection at 1.5°C Warming166 million Indian children affected

Projection at 2°C Warming169 million Indian children affected (96%)

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Practice exam-style questions based on this article.

Q1Static LinkageEasyUPSC, SSC, State PSC

The study on heat stress among children was conducted by which university?

Q2Statement-basedHardUPSC, SSC

Consider the following statements regarding the study on climate change and heat stress:

1. The study defines a heat stress day as a day when the wet-bulb globe temperature in the shade exceeds 28°C.

2. The study found that globally, 560 million children aged 0-9 experience at least one additional month of heat stress due to climate change.

3. The study concluded that children aged 10-19 are at higher risk than children aged 0-9.

Which of the statements given above is/are correct?

Q3Data-centricMediumUPSC, Banking, SSC

According to the VUB study, how many Indian children (aged 0-9) are projected to experience at least one additional month of heat stress in a 2°C warmer world?

Q4Application/ImpactMediumUPSC, SSC, Teaching

Why is humid heat considered more dangerous than dry heat for children's health?

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Climate Change: 145 Million Indian Children (0-9) Face Heat Stress Risk, VUB Study Warns

Exam Lens

Quick Exam Facts From News

1-Minute Revision

News Snapshot

Heat Stress Definition

Children's Vulnerability

Inequitable Impact

Detailed Analysis & Strategic Depth

Context / Background

Core Analysis & Implications

Future Outlook / Way Forward

Prelims Flashpoints

Key Facts at a Glance