At the start of World War II, Japan's Mitsubishi A6M Zero fighter was the most vaunted and feared weapon in the enemy arsenal. Lightweight and maneuverable, the Zero was able to outfly and outshoot ...
Crows may be bird-brains, but the feathered creatures can understand the highly abstract concept of zero, new research suggests. The concept of zero, as used in a number system, fully developed in ...
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