Nursing researchers advanced a theory of “post-traumatic slave syndrome” in the African-American population. Maternal fear of immigration raids shrinks Latino babies in Iowa. Media coverage of unauthorized Mexican immigration drives white Americans to the G.O.P. American labs were worried about their Iranian grad students. Hundreds of thousands of red Skittles escaped onto a Wisconsin highway before they could be fed to cattle. Honeybee guards accept drifting migrant bees but repel hostile raider bees. Predators force guppies to bond. Reef fish will conquer their fear of sharks if the rewards are sufficiently enticing. Reports emerged that a group of chimpanzees…