Smithsonian magazine january 2019 you can also find this option if you click edit your shopping cart. S publisher for further assistance. We are unable to process magazines to other destinations at this time. Because the freezing point of salty water is a lower temperature than pure water, scattering some salt atop ice or snow can help accelerate the melting process, opening up the roads to traffic. International addresses. Science, history, art. All the salt we dump on the roads. Magazine subscriptions offered at can only be shipped within the 50. Please contact the magazine. Add the magazine to your cart, on the next page check the box marked this will be a gift.