Older adults could face harmful heat stress at just 1.5°C of global warming above preindustrial levels, compared with around 4°C for younger adults, suggesting people aged 60 and over are substantially more vulnerable to extreme heat than previously estimated.

Older adults could face harmful heat stress at just 1.5°C of global warming above preindustrial levels, compared with around 4°C for younger adults, suggesting people aged 60 and over are substantially more vulnerable to extreme heat than previously estimated.