Daniel Kammen

Daniel Kammen is chief technical specialist for renewable energy and energy efficiency at the World Bank. He's on leave from the University of California, Berkeley, where he's a professor in the Energy and Resources Group.

Daniel Kammen: Last week

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The 86-Year-Old Farmer Who Won't Quit

A filmmaker returns to his hometown to profile the patriarch of a family farm

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Riding Unicycles in a Cave

"If you fall down and break your leg, there's no way out."

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Carrot: A Pitch-Perfect Satire of Tech

"It's not just a vegetable. It's what a vegetable should be."

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An Ingenious 360-Degree Time-Lapse

Watch the world become a cartoonishly small playground

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The Benefits of Living Alone on a Mountain

"You really have to love solitary time by yourself."

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