The United States may be one of the world's most powerful, but when it comes to average life expectancy, it is not.
After almost 20 years, the life expectancy of Americans has declined by 36.5 days compared to 2015. This means that those born in 2015 in the US will only have a life expectancy of 78.8 years on average.
Smoking could increase the risk of death in HIV patients.
Despite huge increases in life expectancy in both groups, rich people's lives are still extending faster, academics from Cass Business School and the International Longevity Centre-UK (ILC-UK) found.
A study conducted by researchers at the Duke University, Princeton University and the University of Notre Dame, reveals that baboons who suffer from stress at an early age, such as those brought by drought or the loss of mother, would grow to live shorter lives.
Tropical songbirds have a lower adult mortality rate than temperate birds because they are raised in smaller families. This directly affects their wing growth and ability to escape from predators.
The US birth rate may have plateaued in the 1990s, but that doesn't mean there aren't more people strolling - or scootering - on our sidewalks. A new set of statistics has revealed that US life expectancy has reached a new record high, with the average person expected to live for at least 78.8 years.