CNN’s Bianna Golodryga speaks to Steven Johnson, author of “Extra Life: A Short History of Living Longer,” about some of the discoveries and innovations that have led to the average human life expectancy almost doubling over the last century.
CNN’s Bianna Golodryga speaks to Steven Johnson, author of “Extra Life: A Short History of Living Longer,” about some of the discoveries and innovations that have led to the average human life expectancy almost doubling over the last century.
Climate and other environmental changes sometimes drive people to migrate, especially if the land no longer supports a..