Every year, more than 22 million tons of salt are dumped on U.S. roads and highways, but that doesn’t just mean clear streets. Yesterday’s snowstorm was a reminder of this year’s harsh winter, and it brought back the salt truck. While road salt is helpful on streets and roads, it can have a big impact on wildlife and drinking water. Steve Sullivan, the senior curator of Urban Ecology at the Peggy Notebaert Nature Museum, joins us in the studio along with a blue-spotted salamander.