On most lettuce farms, workers weave between rows to cull extra heads of lettuce crowding out the healthiest plants. The practice, called thinning, is labor-intensive and a labor shortage has made it difficult to find workers for the task.
Whatever it was doing up in space, we may never know, but the U.S. Air Force's unmanned X-37B space plane returned to Earth this week, with still no details from the military on the nearly two-year mission.
One of the most debilitating medical conditions in sub-Saharan Africa isn't fatal. In fact, it's easily curable. The culprit is small, but its impact is big. The chigoe flea, more commonly known as a jigger, typically burrows itself into the feet and hands. It prevents millions of children from attending school, stops farmers from working their land, and makes walking all but unbearable.