Impacts www.nytimes.com How the human life span doubled in 100 years Between 1920 and 2020, the average human life span doubled. How did we do it? Science mattered — but so did activism.
Newsletter www.nytimes.com Colonists brought death, disease and climate change to the Americas, study finds Researchers argue that the decimation of indigenous populations set off a chain of events that contributed to a period of global cooling.
