A Company Prospers by Saving Poor People’s Lives

It all started with mosquito nets. Or, no, with guinea worm filters. Or, before that, with a million yards of wool in the mountains of Sweden. Or, taken back another generation, to uniforms for hotel and supermarket workers. There are plenty of charitable foundations and public agencies devoted to helping the world’s poor, many with instantly recognizable names like Unicef or the Gates Foundation.

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