Symmetry attracts us. Studies comparing people’s reactions to different faces have shown, for example, that they find highly symmetrical faces more attractive than less symmetrical faces. The symmetry ...

Many animals naturally develop asymmetric body parts; just look at the massive claw of the fiddler crab or the distorted Picasso-like face of the flatfish. But most mismatches are subtler. As a ...

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This week's question comes from Meiko Sakamoto in Tokyo who asks: "Why do all creatures — dogs, humans, fish, even insects — look symmetric? Even our imaginary aliens are often depicted with a ...