Life Expectancy Fell in the United States Again, Mostly Because of Drug Overdoses
Spanish flu, HIV/AIDS, drug overdoses: Epidemics that affect the young often show up dramatically in the data.
Life Expectancy
Live Long and Falter: Spry Population Linked to Endangered Species
If a country's human population is long-lived, it's bad news for the local critters—almost as bad as being a native bird in New Zealand.