The debate about sustainable diets has focused on meat production, which requires lots of land and water to grow grain to feed livestock. It also contributes to methane emissions. But the cabinet secretaries with final authority say the 2015 dietary guidelines won't include sustainability goals. David McNew/Getty Images hide caption

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A view of Canton (Guangzhou), on the Pearl River in China, circa 1840. Canton was already a great trading port when the American ship Empress of China arrived in 1784 to fill up its hold with tea. Hulton Archive/Getty Images hide caption

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A small group of people rallied outside the Boston Museum of Fine Arts on Monday to protest that paintings by famous French Impressionist painter Pierre-Auguste Renoir are featured in the museum. Courtesy of Max Geller hide caption

itoggle caption Courtesy of Max Geller

Political messaging is a long-standing tradition, as shown here by a beaming President Harry Truman speaking at the Women's National Democratic Club in 1949. Harvey Georges/AP hide caption

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People wait in line outside the Supreme Court in March. There is a public line and a separate line reserved for members of the Supreme Court bar. Molly Riley/AP hide caption

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An image from aerial footage of flood damage in South Carolina. SCETV/YouTube hide caption

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