The smallest hummingbird in the world is as long as a toothpick and weighs less than a cube of sugar. At just over two inches long and weighing a mere two grams, the bee hummingbird (Mellisuga helenae ...

If we set aside elephants and blue whales for a moment and shift our focus to the other end of the size spectrum, the world of tiny animals is truly astonishing. Measured in millimeters, these ...