Circles, triangles and squares. One of the first things we learn as children are basic geometric shapes. And they stay with us throughout our lives. Maybe it’s that sense of familiarity that makes ...

The mirror spider can rapidly shift a patchwork of minuscule reflective plates underneath its abdomen’s outer surface, altering the pattern of mirrorlike flashes. This uncommon display comes from ...

Life begins with a single fertilized cell that gradually transforms into a multicellular organism. This process requires precise coordination; otherwise, the embryo could develop serious complications ...