Lancet report: climate change drove half of India's heatwave days

The 2026 Lancet Countdown on Health and Climate Change says half of the heatwave days people in India faced between 2016 and 2025 were directly caused by climate change, with heat costing an estimated 193 billion potential labour hours a year. It warns of rising dengue, malaria and waterborne disease risks and urges treating climate change as a global health emergency.