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Every year the nation uses more than 20 million tons of salt to clear snow and ice from winter roads. While it may make the roads safer, scientists say salt may have the opposite effect on drinking water and wildlife. Living on Earth’s Ashley Ahearn reports.
Every year, the nation uses more than 20 million tons of salt to clear snow and ice from winter roads. While it may make the roads safer, scientists say salt may have the opposite effect on drinking water and wildlife. Ashley Ahearn reports.