The Salt Featured Two The Salt featured two

Imported from Europe, the custom of leaving gratuities began spreading in the U.S. post-Civil War. It was loathed as a master-serf custom that degraded America's democratic, anti-aristocratic ethic. Hulton Archive/Getty Images hide caption

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Hulton Archive/Getty Images

The Yocha Dehe tribe grows, mills and markets its own extra-virgin olive oil. The tribe's mill uses top-of-the-line equipment imported from Florence, Italy. Courtesy of Lisa Morehouse hide caption

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Courtesy of Lisa Morehouse

Native American Tribe Bets On Olive Oil

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Oranges ripen in a grove in Plant City, Fla. Citrus greening, a disease spread by a tiny insect that ruins oranges and eventually kills the trees, has put the future of the state's $10 billion citrus industry in doubt. Chris O'Meara/AP hide caption

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Chris O'Meara/AP

How Long Can Florida's Citrus Industry Survive?

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One of the main attractions in "The Edible Monument" exhibition at the Getty Center in Los Angeles is a nine-foot long sugar palace showing the Greek sorceress Circe meeting Odysseus' men. Abbie Fentress Swanson for NPR hide caption

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Abbie Fentress Swanson for NPR

A Butterball turkey for sale in November 2014, in Centreville, Va. Terms like "premium" and "raised without hormones" tell you little about the quality of the turkey or how it was raised. Paul J. Richards/AFP/Getty Images hide caption

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Paul J. Richards/AFP/Getty Images

People who drank three to five cups of coffee per day had a lower risk of premature death than those who didn't drink, a new study finds. iStockphoto hide caption

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iStockphoto

Drink To Your Health: Study Links Daily Coffee Habit To Longevity

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Chipotle restaurant workers fill orders for customers. The company is now sourcing some of its pork from a British supplier that uses antibiotics to treat pigs when ill. Gail Hansen, a veterinarian and longtime critic of antibiotic overuse on farms, welcomes this shift in Chipotle's stance on the drugs. Joe Raedle/Getty Images hide caption

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Joe Raedle/Getty Images

Why Chipotle's Hard Line On Swine Antibiotics Is Now Blurry

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You probably wouldn't want to eat these Jack O'Lanterns since they've been carved and sitting out. But this variety of pumpkin is perfectly edible and nutritious. Wildcat Dunny/Flickr hide caption

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Wildcat Dunny/Flickr

Chefs Kerry Heffernan and Tom Colicchio pose for a photo at Bearnaise, a Capitol Hill restaurant, on Tuesday before setting out for a day of lobbying lawmakers. Kris Connor/Getty Images hide caption

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Kris Connor/Getty Images