Two women from the city of Arles help Frenchwoman Jeanne Calment celebrate her 114th birthday in 1989. She celebrated a further eight birthdays and is the oldest documented person to have lived. Photo: AFP

What’s the longest humans can live? 115 years for women, 114 for men. Plus: how phones, drones help save lives of world’s poor

Dutch researchers use extreme value theory to work out oldest age humans can reach. Meanwhile, new technology helps save lives in developing countries

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Two women from the city of Arles help Frenchwoman Jeanne Calment celebrate her 114th birthday in 1989. She celebrated a further eight birthdays and is the oldest documented person to have lived. Photo: AFP
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