Stepping in gum on the sidewalk won't be such a sticky situation anymore — scientists have invented non-stick gum.

Clean Gum, as it is called, supposedly can be easily removed from shoes and pavement (as well as from hair, skin, and clothes). So walk down the street without fear of ruining your favorite shoes.

Results from preliminary tests, announced today at the annual BA Festival of Science held at the University of York in England, also indicate that the gum will degrade naturally in water.

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"The advantage of our Clean Gum is that it has great taste, it is easy to remove and has the potential to be environmentally degradable," said Terence Cosgrove of the University of Bristol in England and a scientist for the company, Revolymer, that created the gum.

Researchers pitted Clean Gum against commercial gums by sticking them both to the sidewalks on local streets and seeing which gums were easier to remove.

The commercial gums remained stuck to the pavement three out of four times, while in all tests, Clean Gum was removed within 24 hours by natural events.

The trick to decreasing the stickiness of the gum was to add a polymer that made it less adhesive to most of the surfaces that the chewy stuff tends to stick to.

Revolymer plans to market Clean Gum commercially and launch the product in 2008.

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