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Word Count: 655
A researcher in the United Kingdom may have come up with an answer to an old problem what to do with the millions of tires that are discarded annually Old tires are a huge problem theyre dumped theyre buried theyre piled into mile-high mountains If you stacked all the stockpiled and landfilled waste tires in the United States on top of each other they would reach the moon Lay them end to end and they would encircle the globe more than 140 times Its estimated that more than 2 million tires are discarded annually in the European Union and another 270 million in the United States An estimated 3 billion are stockpiled awaiting disposal in the US Dumping in the open creates an eyesore that may result in accidental fires with high pollution emissions or breeding ground for mosquitoes and home to vermin Coming up with a way to get rid of all these tires has been the focus of researchers for years Playgrounds and parking lots have been paved with them sneakers made with them equipment built with them But past strategies have been either limited in terms of the numbers of tires that can be used not very cost effective or both The oil and gas tied up in the mountains of scrap tires have long been targeted as a possible replacement source of fossil fuels Tires can yield up to 60 percent of their weight as fuel oil but the relatively low price of refined crude makes tire-derived fuel products economically unappealing Dr Paul Williams an energy researcher at University of Leeds has developed a process he believes will tip the scales toward a greener future for the billions of waste tires awaiting disposal across the world Williams has taken a technique known as pyrolysis which has been around for a while and taken it one step further Pyrolysis is the degradation of the rubber of the tire using heat in the
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