Africa's elephant population is in crisis.
Some 30,000 were killed for their tusks in 2012, according to the International Fund for Animal Welfare, and by some estimates, the population could be decimated in a decade if poaching continues at this rate.
That's where Microsoft cofounder Paul Allen's Great Elephant Census, the project he started with a $7.3 million grant and a partnership with the Botswana nonprofit Elephants Without Borders, comes in.
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