People are notorious for under-reporting what they consume — they lie, forget or just guess wrong. For researchers who want to know how much soda we’re drinking, a high-tech analysis technique could help.
Prawns will rub themselves when dabbed with acid. And hermit crabs show stress-related behavior after getting shocked out of their shells. Now scientists find that British shore crabs can learn to avoid an electric shock — a key sign that crustaceans really do experience pain.