Chicken blushing / Smectic / Entropy for travel / Sword swallowing / Kids’ saliva

This week’s Feedback column (that I write) in New Scientist magazine has four segments. Here are bits of each of them: Chicken blushing — People — humans — blush. Chickens aren’t entirely inhuman in that they, too, show emotions on their facial skin. Delphine Soulet at the University of Tours, France, and colleagues have explored how skin redness […]