"The field camp was mainly set up to look at and protect the Nigerian chimpanzee, which is a sub-population of chimpanzee, " Dr Pilgrim added.
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Users answer demographic questions and participate in daily and live-event polls, and because Microsoft can track someone over the course of the election season, much can be learned about the swing voter sub-population.
More than half the world's population already lives in cities and the urban population of sub-Saharan Africa is projected to double by 2030.
"Sub-Saharan Africa 's population has grown faster than any region over the past 30 years, despite the millions of deaths from the Aids pandemic, " the UN Population Fund says.
According to a report published by the Pew Forum in December, the Christian share of the population of sub-Saharan Africa has soared over the past century, from 9% to 63%.
Habitat, 62% of the urban population in Sub-Saharan Africa lives in slums, which it describes as being typically characterized by deplorable living conditions, a feeling of insecurity and inadequate infrastructure for basic energy, sanitation and water services.
In sub-Saharan Africa, half the population is living in absolute poverty.
The population boom in much of sub-Saharan Africa is far outstripping economic growth.
The report calls for more emphasis on engineering solutions to problems caused by rapid population growth, particularly in sub-Saharan Africa.
The share of the population that is Christian in sub-Saharan Africa climbed from 9% in 1910 to 63% in 2010, while in the Asia-Pacific region it rose from 3% to 7%.
In sub-Saharan Africa, where much of the population lives on the edge of subsistence, poverty and slow economic growth, or outright decline, increased the likelihood of future state collapse, thereby trapping the countries in a vicious circle of poverty and political instability.
The two sub-species of white rhino (Ceratotherium simum) have a population in the region of 20, 000 in South Africa alone.
It's more common in Sub-Saharan Africans, African-Americans and Native Americans than in other population groups.
"If 33% of (the) urban population lives in slums -- they may live in sub-human conditions, but still, they are a drain on the economy, " he said.
Nigeria has the largest internet penetration in Sub-Saharan Africa of over 43 million active users (out of a population of 155 million), and the second largest economy in Africa, behind that of South Africa.
Sub-Saharan Africa, which accounts for only 10% of the world's population, is the prime sufferer.
In fact, a UNICEF analysis illustrated that across 31 countries in sub-Saharan Africa less than a third of children in the poorest 20 percent of the population receive appropriate treatment for diarrhoea, compared to almost half of children in the wealthiest 20 percent.
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Gabon enjoys a per capita income four times that of most sub-Saharan African nations, but because of high income inequality, a large proportion of the population remains poor.
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