'Killer robots' are becoming a real threat in Africa

The use of drones in the Sahel, a region of Africa that has been plagued by violence driven by jihadist insurgency for much of the past decade, has become a real problem. In April, for example, Al Qaeda's affiliate in the ...

Study uses topological data analysis to identify voting deserts

In past years, elections in the U.S. have been marked by stories of long waiting lines at the voting polls. Add other barriers, like long commutes and inadequate transportation, and voting can become inaccessible. But these ...

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