post a random bit of trivia to impress the preceding poster

[Vosem]

Because hydrogen bonding between frozen water molecules keeps them relatively far apart, ice is approximately 10% less dense than liquid water at 4 degrees Celsius (or, in American terms, 41 degrees Fahrenheit). This allows bodies of liquid water to exist beneath ice, enabling life on Earth as we know it to exist (if water behaved like a normal liquid, the oceans would quickly freeze over and only the top several inches would melt during the course of a summer).