Technology
Spot-the-difference software maps city’s mean streets
Crowdsourced voters have taught a computer to recognise when a street looks safe – its automated maps could help homebuyers or even track inequality
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Crowdsourced voters have taught a computer to recognise when a street looks safe – its automated maps could help homebuyers or even track inequality
Money from illegal ivory has helped to bankroll virtually every African conflict in recent decades, from groups like Boko Haram to civil wars