While elephant poachers are only interested in the animals’ tusks, for Kenyan entrepreneur John Matano it is all about what comes out of the other end of the world’s largest land mammal. This is ...
On the Greek island of Crete, goats spend their summer days idly snacking on dry grass. Then they poop it out, leading to epiphanies for materials engineers like Dr. Alexander Bismarck of the ...
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