January 14, 2010, 6am PST
Winter brings snowy conditions to roads in many cities, and many react with snow-melting salt solutions. But the physical and environmental damage of salt is leading some to look for other means of fighting the freeze.
April 27, 2008, 9am PDT
<p>Officials in the United Kingdom are looking at a new technique to deal with frozen winter roads -- by collecting and saving summer heat.</p>