Light can tie knots—literally. Engineers at Duke University have managed to manipulate laser beams to form intricate 3D patterns called optical knots, using custom-designed optics. These twisted beams ...

Bird beaks come in almost every shape and size—from the straw-like beak of a hummingbird to the slicing, knife-like beak of ...

Micro decisions can have macro consequences. A soft matter physicist reveals how interactions within simple cellular ...