No. 690: The Ginaca Machine

by John H. Lienhard Today, a machine keeps a gentle land from being gobbled up — but only for a while. The University of Houston’s College of Engineering presents this series about the machines that make our civilization run, and the people whose ingenuity created them. In 1951, a young woman took me to...

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Dying for Discovery

Almost 20 years ago now, in western Ecuador, I traveled with a team of extraordinary biologists studying a remnant of forest as it was being hacked down around us. Al Gentry, a gangling figure in a grimy T-shirt and jeans frayed from chronic tree climbing, was a botanist whose strategy toward all hazards was...

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