Mucus—snot—can be so gross. It’s also critical for many animals, including hagfish, snails and people. Snot can rid our bodies of nasty bacteria and viruses. In other creatures, it can smooth the road or rough up predators.
Scientists thought that cave art started in Europe. New analyses now dash that assessment. Stencils in an Indonesian cave are every bit as old as the better-known drawings in caves in France and Spain.
Stress and anxiety can lead to serious mental and behavioral problems. Identifying stressors can help people cope with anxiety. Even better, viewing stress as a strength can tone down anxious feelings and boost productivity.
Certain types of fiber suppress appetite, at least in mice. Found in fruits, vegetables, oats and barley, this fiber breaks down in the gut to release acetate. That travels to the brain, where the chemical prompts the release of hunger-fighting hormones.