world population

A new model has predicted that Earth's population is likely to decrease in all scenarios across the next century and will peak nowhere near the 11 billion previously forecast.

Global population growth will nearly grind to a stop by the end of the century.

Pope Francis did the world a service with his encyclical addressing climate change, but he failed to address population growth, scientists say.

If you're in perfect health, you're in the minority: Less than 5 percent of people worldwide had no health problems in 2013, a new study finds.

The U.S. birth rate reached an all-time low in 2013, as the number of babies born in the country declined for the sixth straight year since the peak in 2007, a new report finds.

With 11 billion people expected to live on Earth by 2100, the spread of infectious disease is a major concern, and scientists are working to spot the next pandemic before it starts.

A recent report from the United Nations projects global population could hit 11 billion people by the year 2100. How might this rapid growth affect climate change?

Providing enough water for 11 billion people will require drastic improvements in agricultural water use and a new way of accounting for water usage in the economy.