Bumblebees learn to solve puzzles by watching more experienced peers, research has shown. Experts from Queen Mary University of London trained a set of bees (Bombus terrestris) to open a puzzle box containing a sugar reward. These bees then passed on the knowledge to others in their colonies. The researchers said their findings, published in the journal Plos Biology, provide “strong evidence” that learning by observing peers can drive behaviour in bumblebees.