How to Melt an Iceberg

Suppose you were to place an ice cube in a cup of salt water and another in a cup of tap water. Which would melt first? Surely, ice melts faster in salt water, right? After all, we don’t sprinkle salt on icy sidewalks for the fun of it. If you’re the curious type, you can try this experiment at home. Be prepared, though, for a surprise: Ice always melts faster in fresh water!