Cold water is easy to heat if you know how to make fire. Most early humans probably knew how to make fire. Hot water, however, is difficult to cool without refrigeration.
Spring and well water is often cool. I don’t know about the water that comes down from the mountains. Does it retain it’s coolness when the snow melts and runs down into the valley?
Cold water is easy to heat if you know how to make fire. Most early humans probably knew how to make fire. Hot water, however, is difficult to cool without refrigeration.
Spring and well water is often cool. I don’t know about the water that comes down from the mountains. Does it retain it’s coolness when the snow melts and runs down into the valley?
Hot water is pretty easy to cool. Just leave it in a vessel in a cool place and come back later.
Yes, it does. Fresh mountain spring water is very cool and refreshing. Some of it even runs down from glaciers and is nearly ice cold.