We thought it was evolution, but an experiment with pencils shows that tips like teeth and thorns may owe their rounded shape ...

Animal behavior reflects a complex interplay between an animal's brain and its sensory surroundings. Only rarely have scientists been able to discern how actions emerge from this interaction. A new ...

Medieval poets wrote about auroras. Their work is providing clues to the solar cycle Medieval poets, including a Japanese noble, provided key descriptions to track down solar events ...