To calculate how long it takes a country's population to double in size and to investigate factors affecting growth rate. Since 1800, human population has grown from one billion to six billion people.

A new study led by researchers from Oxford Population Health has shown that a range of environmental factors, including lifestyle (smoking and physical activity), and living conditions, have a greater ...

The researchers said the index has the potential to help other organizations identify and assist populations with poverty and poor health. A recent pilot program in an emergency department in ...

To calculate how long it takes a country's population to double in size and to investigate factors affecting growth rate. Since 1800, human population has grown from one billion to six billion people.