⛸️❄️ Why does a thin metal blade make it easier to slide on #ice instead of digging in?
From 12th-century bone skates to modern Olympic steel, the secret lies in a strange, disordered layer of #molecules that acts like a #microscopic lubricant.
👉 https://www.theguardian.com/news/2026/feb/13/weatherwatch-science-how-ice-skating-works