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Hexagon in nature: why is the honeycomb hexagonal? — Steemit
Hexagons are the most scientifically efficient packing shape, as bee honeycomb proves.
things that are naturally hexagon - Google Search
Gallery of hexagons in nature
Patterns in nature: The efficiency of hexagons – letting nature back in
Why is The Hexagon Everywhere? All About This Seemingly Common Shape
Ever wonder why there are so many hexagons in nature? | Videos
Geometry: Why do we see hexagons in nature so often? - Quora
What Is It About Bees And Hexagons? : Krulwich Wonders... : NPR