To begin with, the Facebook AI team crunched 14.6 billion images of maps from across 20 countries, including India, covering 21.6 million sq kms to come up with the first detailed map of human settlement for these countries.

"This is an impressive project from our team developing solar-powered planes for beaming down internet connectivity and our AI research team. Many people live in remote communities and accurate data on where people live doesn't always exist," wrote Facebook CEO Mark Zuckerberg in a latest post.

The 20 countries mapped were Algeria, Burkina Faso, Cameroon, Egypt, Ethiopia, Ghana, India, Ivory Coast, Kenya, Madagascar, Mexico, Mozambique, Nigeria, South Africa, Sri Lanka, Tanzania, Turkey, Uganda, Ukraine and Uzbekistan.

"We can't beam internet connectivity to people if we don't know where communities are, so we built AI technology to analyse 15.6 billion satellite images to create much more accurate population maps across 21.6 million square kilometers of Earth," the 31-year-old billionaire added. To create such maps, Facebook's Connectivity Lab teamed up with the company's AI group and data science team.

It obtained over 14.6 billion images of maps from Columbia University and the World Bank. It then employed its AI algorithm to identify objects, specifically things that would show humans are living in the area, like houses, shelter and roadways.