This new epidemic of extreme heat represents one of the gravest threats to humanity, scientists say, but it won’t affect the world in a uniform way. While certa

This new epidemic of extreme heat represents one of the gravest threats to humanity, scientists say, but it won’t affect the world in a uniform way. While certain parts of rich countries will see a surge in days, most of the danger will come in poor countries in already hot regions such as South Asia and sub-Saharan Africa that lack widespread air conditioning and other advantages like advanced health-care systems. On the upside, what you really need is cultural adaptation, like siestas in Mexico. And some of this places may be better positioned to pursue that than a lot of wealthier countries where some people can't solve anything if throwing money at it doesn't resolve it in short order.