To make less-harmful road salts, we're studying natural antifreezes produced by fish

Deicing salts keep winter roads passable but do a lot of harm in the process. Gregory Rec/Portland Portland Press Herald via Getty Images Many people associate a fresh snowfall with pleasures like hot chocolate and winter sports. But for city dwellers, it can also mean caked-on salt that sticks to shoes, clothing hems and cars. That’s because as soon as the mercury dips below freezing and precipitation is in the forecast, local governments start spreading de-icing salts to keep roads from freezing over. These salts are typically a less-refined form of table salt, or sodium chloride, but can al…

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HEDGE accordingly