Extreme heat kills roughly half a million people worldwide each year, but at the current rate of global warming, it could be close to five times as deadly by 2050. Then there are the indirect health risks of climate change: chaotic weather and higher temperatures generate deadly natural disasters, bring diseases into new areas, and drive up economic insecurity and poor mental health.
Governments need to act, and the Lancet Countdown—an international research collaboration that tracks how health is being impacted—is giving decision-makers undeniable evidence that change is needed right now. “When we talk about climate change, we’re not talking about the future. The cost of inaction is that we
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