A 2D shape is symmetrical if you can draw a line through it and it looks exactly the same either side. This line is called a line of symmetry. Oh that rather smug expression tells me that square knows ...

Crows can recognize geometric patterns, suggesting that humans aren't unique in understanding shape structure.

Why are some window boxes so beautiful while others are so blah? It’s all about design, according to Sonia Uyterhoeven, the gardener for public education at The New York Botanical Garden in the Bronx.

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