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In Angola, I visited 'HeroRats' that have been trained to sniff out land mines (and, in some countries, diagnose tuberculosis). In a day, they can clear 20 times as much of a minefield as a human, and they work for bananas!
In Angola, I visited 'HeroRats' that have been trained to sniff out land mines (and, in some countries, diagnose tuberculosis). In a day, they can clear 20 times as much of a minefield as a human, and they work for bananas!
Nicholas Kristof
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