Cows that consume feed, grass or water contaminated with radioactive iodine-131 can concentrate the element in their milk. Peter Elvidge/iStockphoto.com hide caption

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Moshe Rute smokes marijuana at the Hadarim nursing home in Kibutz Naan, Israel, in early March. The Israeli government and a private company are distributing cannabis for medicinal purposes to more than 1,800 people in Israel. Uriel Sinai/Getty Images hide caption

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Paul Rider runs on Mulholland Drive in Los Angeles, March 25, 2011. Researchers say a moderate running regimen is actually beneficial for the joints of people with healthy knees. Dennis J. Provost for NPR hide caption

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Zach Lester, seen here working in the field of Tree and Leaf Farm, grew the kale, chef Todd Woods cooked it, and Your Health podcast host Rebecca Davis got to eat it. Maggie Starbard/NPR hide caption

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Zach Lester, seen here working in the field of Tree and Leaf Farm, grew the kale, chef Todd Woods cooked it, and Your Health podcast host Rebecca Davis got to eat it. Maggie Starbard/NPR hide caption

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Todd Woods and his sous chefs prepare baby greens for a quick saute at Restaurant Nora in Washington, D.C. Maggie Starbard/NPR hide caption

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Food

Cooking Up Healthy Winter Greens At Nora's

Chef Nora Pouillon of Restaurant Nora in Washington, D.C., shows NPR Host Linda Wertheimer a fresh way to cook greens without resorting to a long, slow braise and a hamhock.

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Tyler Scorza, 7, had his tonsils removed last year to help with his snoring. We have the story on this week's podcast. Maggie Starbard/NPR hide caption

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