Wikipedia:POTD column/June 18, 2006

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Orb-weaver spider

The orb-weaver spiders build spiral wheel-shaped webs. The spiderweb has always been thought of as an engineering marvel. In building it, the spider starts with a line, floated on the wind to another surface. The spider secures the line and then drops another line from the center, making a "Y". The rest of the scaffolding follows with many radii of non-sticky silk being constructed before a final spiral of sticky capture silk.

Photo credit: Fir0002
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