Forbes contributors publish independent expert analyses and insights. I write about biodiversity and the hidden quirks of the natural world.

Measuring a mere 3 inches long and weighing one-tenth of an ounce, roughly the same as a table tennis ball, the Calliope hummingbird is incredibly tiny. In fact, Eric Rasmussen, avian scientist at the ...

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 ...