Physicist Takes Energy Efficiency From Theory to Practice

Eighty-year-old particle physicist Arthur Rosenfeld began his career slamming atomic nuclei together at the University of California at Berkeley. Then he moved to a new job: working with refrigerators and light bulbs. That second job, he says, has really paid off to the tune of $800 billion in energy savings from inventions and innovations in his lab. They did that by making refrigerators more efficient.

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