LifeMonarch butterflies' beautiful wing scales enable their epic migration This extreme close-up of a butterfly wing, made by stitching together 2100 exposures, shows the tiny scales that allow monarchs to fly thousands of kilometres Regulars
PhysicsInside the hunt for the universe's missing ingredient – dark matter Dark matter fills much of the universe, but we don't know what it is. A new detector hopes finding a theoretical particle called an axion will shed some light Regulars