As scientists and theorists study patterns, design, chaos, complexity they often turn to nature for examples and there is plenty of examples in nature too. The stripes on a zebra, patterns on a butterfly, spider webs, leafs on a tree, scales on a fish, seashells, brain waves, muscle structure, texture of granite, spider webs, Earth cycles, waves on the ocean, wind flow, clouds in the sky, Rainbows, Solar System, structure of a meteorite and even DNA itself.

One pattern of nature we often do not discuss is the patterns of erosion, which we can see better from an airplane, satellite photo, from valley looking up at a mountain or from top a mountain looking down below. Recently on Mars we see the patterns of erosion suggesting previous water flows.

http://www.astrobio.net/cgi-bin/h2p.cgi?sid=479&ext=.pdf

We see such erosion patterns on Titan, which most certainly believed to be caused by liquid methane. Such images have caused a stir in the scientific community as well as space enthusiasts.

http://www.guardian.co.uk/uk_news/story/0,...1395978,00.html

The patterns of the landscape so similar to those on Earth with rivers, lakes, coastlines that one has to wonder if patterns of erosion are not known quantities coming from a planned design? Although how can this be? In Stephen Wolfram