<A HREF="http://www.electronicsweekly.com/articles/article.asp?liArticleID=39124&liArticleTypeID=1&liChannelID=7&src=rssfeed">Borrowing an idea from nature,</A> John Hopkins University in Maryland has designed a sensor which allows a robot to feel its way around. The flexible wand-like device is based on detailed examination of a cockroach antenna.