Climate Change and Human Heat Limits: Are We Reaching the Red Zone?
Rising Global Temperatures: Average global temperatures are increasing due to greenhouse gas emissions, pushing many regions toward dangerous heat levels.
Wet-Bulb Temperature: This is a measure combining heat and humidity. A wet-bulb temperature of 35°C (95°F) is considered the upper limit of human survivability for extended exposure.
Crossing Critical Limits: Some areas in South Asia and the Middle East have already recorded near or above 35°C wet-bulb readings, signaling high danger.
Heatwaves Are More Frequent: Heatwaves are becoming more intense and common worldwide, straining human health, infrastructure, and agriculture.
Health Impacts: High heat impairs the body’s ability to cool itself, leading to heatstroke, dehydration, and even death, especially among the elderly and outdoor workers.
Urban Heat Islands: Cities tend to trap more heat due to concrete, asphalt, and limited green spaces, making them more vulnerable to extreme temperatures.
Economic Consequences: Productivity drops significantly in high heat, particularly in labor-intensive industries, affecting livelihoods and economies.
Climate Refugees: As some regions become uninhabitable, people may be forced to migrate, increasing pressure on other communities and nations.