We've known for a while that people who grow up on farms are less likely to have ailments related to the immune system than people who grow up in cities. Those include asthma, allergies, inflammatory bowel disease and multiple sclerosis.
If Danish pigs can live with fewer antibiotics, why can't their American cousins?
It's a hot topic, especially today. Yesterday, a federal judge ordered the U.S. Food and Drug Administration to proceed with a 1977 plan to outlaw the use of certain antibiotics as growth promotion drugs.
With a new leader in North Korea, the U.S. and South Korea are watching for clues of his policies. But so far tensions have not eased along the demilitarized zone. Here, two North Korean soldiers look across at a South Korean soldier on Dec. 2.
Credit Eric Talmadge / AP
Lt. Col. Ed Taylor speaks as he stands behind a wall of sandbags overlooking North Korea from the South Korean side of the demilitarized zone, or DMZ. Taylor commands a joint American-South Korean battalion along the frontier.
Credit Susan Walsh / AP
President Obama looks toward North Korea from a post on the South Korean side of the DMZ, the tense military border between the two Koreas, on Sunday. At right is U.S. Lt. Col. Ed Taylor, commander of the U.N. Command Security Battalion-Joint Security Area.
Credit Doualy Xaykaothao / NPR
Lt. Col. Edward Taylor commands the only U.S. and South Korean battalion on the Korean Peninsula. He stands near the Korean armistice line, with North Korea behind him.