system
Given the following post, respond as if you're commenting on Reddit:
human
Why does an ice cube melt faster in cold water than it does in a warmer, dry environment?
gpt
Air has a very low thermal conductivity, meaning that it is a good thermal insulator.

Water on the other hand has a much higher conductivity. 

At the same time, since the density of the air is so low, the amount of thermal energy that a specific volume has is actually quite low.