Ready, set, fly! The ball bearings glued to this bumblebee's legs simulate the weight and placement of pollen loads. The tag on the insect's back is a lightweight sensor, designed to track its movements in flight. Courtesy of Andrew Mountcastle hide caption

itoggle caption Courtesy of Andrew Mountcastle

Olive oil gets filtered in an oil mill in a Portuguese oil farm near Evora. Rick Mattes says that if an olive oil's concentration of fatty acid rises above 3.3 percent, it's no longer considered edible. And it'll be brimming with oleogustus. Francisco Seco/AP hide caption

itoggle caption Francisco Seco/AP

Traditional recipes for duck confit, or confit de canard, can require dozens of steps to prepare. David Lebovitz's fake take cuts the steps down to five. Ed Anderson/Courtesy of Ten Speed Press hide caption

itoggle caption Ed Anderson/Courtesy of Ten Speed Press

Bobkat's Purple Pie Place is a fixture in Custer, S.D. Trevor Yehle hide caption

itoggle caption Trevor Yehle

A farm owner inspects his tobacco crop in the sun. While Zimbabwe's tobacco production has made something of a turnaround lately, journalist Peta Thornycroft says much of the country's troubles since 2000 have been tied to failures in its capital-intensive tobacco farms. Philimon Bulawayo/Reuters/Landov hide caption

itoggle caption Philimon Bulawayo/Reuters/Landov

Organic farmer Margot McMillen holds a grape leaf damaged by pesticide drift on her farm, Terra Bella Farm, in central Missouri. Kristofor Husted/Harvest Public Media hide caption

itoggle caption Kristofor Husted/Harvest Public Media

Mineral supplements, ape-style: A female chimp called Kana eats clay in the Budongo Forest of Uganda. A.Schel/Budongo Conservation Field Station/Animal Ecology, Utrecht University, The Netherlands hide caption

itoggle caption A.Schel/Budongo Conservation Field Station/Animal Ecology, Utrecht University, The Netherlands

Lake herring roe at the Dockside Fish Market in Grand Marais, Minn. Some workers at the market call it "Lake Superior Gold." Derek Montgomery for NPR hide caption

itoggle caption Derek Montgomery for NPR

An illustration from The Innocents Abroad by Mark Twain, published in 1897. Between the 1860s and 1920, when Prohibition went into effect, American bartending came into its own. Internet Archive Book Images/Flickr hide caption

itoggle caption Internet Archive Book Images/Flickr

A meta-analysis found that people on vegetarian diets lost around 4.4 pounds more than the control group (who had no change in diet), while those who went vegan dropped 5.5 pounds more. Marcus Butt/Ikon Images/Corbis hide caption

itoggle caption Marcus Butt/Ikon Images/Corbis

Thai and Burmese fishing boat workers sit inside a cell at the compound of a fishing company in Benjina, Indonesia on Nov. 22, 2014. The imprisoned men were considered slaves who might run away. Dita Alangkara/AP hide caption

itoggle caption Dita Alangkara/AP

Gary Broomell and his daughter, Debbie, pose behind a sign on their ranch in San Diego County. Their family has been growing citrus for generations, but lately, it's been hard staying in the black growing oranges, so they started a vineyard a few years ago. Lesley McClurg/ Capital Public Radio hide caption

itoggle caption Lesley McClurg/ Capital Public Radio