Snow and calcium chloride
This winter has been pretty cold. In addition, it snowed quite a bit from time to time. The sight of snow blanketing the streets and rooftops is undeniably picturesque. But the reality beneath that beauty is far less romantic. Snow and ice bring dangers such as slippery roads, treacherous sidewalks and the constant risk of accidents. For decades, the solution has been straightforward: spread calcium chloride. It is cheap, effective and fast. Yet the more we rely on this chemical, the more we must confront the hidden costs we incur. Calcium chloride works by lowering the freezing point of water, melting ice even in subzero conditions. This makes it far more effective than simple shoveling or sand. Municipal governments, apartment complexes and businesses all use it liberally, often without much thought. I myself was fooled one morning, stepping out of my apartment and thinking the night had brought another slight snowfall, only to realize it was calcium chloride spread by the management office. The problem is not its effectiveness but its overuse. Statistics have shown that Korea spreads
Feb 9, 2026By Sho Chang-young