Honeybees understand that "nothing" can be "something" that has numerical meaning, showing that they have a primitive grasp of the concept of zero. That's according to a newly published study in ...

The concept of zero may seem easy to you, but many human societies struggled with the idea. However, some of the world's smartest animals understand zero, and now that group includes the honey bee.

Researchers at the University of Tübingen in Germany have new evidence suggesting crows can contemplate the number zero. This ability means the birds join an “elite” group of creatures that can ...