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Although it is very pretty, the picture on the front page is not only there for that reason. It shows the mother-of-pearl of an abalone snail, a natural material from whose hardness and resilience we can still learn quite a bit. These exceptional mechanical properties have not yet been exceeded by man-made materials. Why? Because until recently nobody understood, how the snails do it. But now that clever minds have solved the mystery, that problem is out of the way. And so in the not so far away future it just might be that some materials scientists will be able to get rid of the annoying habit of ceramics to be so very brittle. Speaking of mother nature's wonders in creating materials, our teeth are another great example. Here, the strength lies, contradictorily, in its many defects that make sure that we can chew all those remaining unhealthy Christmas cookies. Aside from New Year's resolutions, this is a great thing and is currently being investigated further at Michigan Technological University. ...
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