Dog tail wagging, Donald Duck dam jubilee, Anti-covid tea-gargling, Urine on acorns

This week’s Feedback column (that I write) in New Scientist magazine has four segments. Here are bits of each of them: Chasing the tale — Silvia Leonetti and colleagues in the Netherlands, Italy, Austria, the US and Denmark don’t quite explain why dogs wag their tails, but they do explain that it is hard to explain. In a paper […]