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Animals Count and Use Zero. How Far Does Their Number Sense Go?
Crows recently demonstrated an understanding of the concept of zero. It’s only the latest evidence of animals’ talents for numerical abstraction — which may still differ from our own grasp of numbers.
Solution: ‘How Equality and Inequality Shape Birds and Bees’
Puzzle solvers explored how evolution may have used negative and positive control mechanisms to shape the conflicting parental functions of reproduction and child rearing.
How Equality and Inequality Shape the Birds and the Bees
Two dynamic, seemingly opposing forces likely played an important role in the evolution of reproduction and child rearing in social animals like bees and humans.