Too funny. I wish it were garage sale season so I could pick up an old one for him for his experiments. I tried to explain the concept of heat waves but I am not sure I got it right. I pointed him at Google and said "Have away with it" after a ton of "Why won't this work?" And yes he knows all about the water molecules and made the melted snow explode shortly before I came in and noticed he was using a glass cup! I-YI-YI. I need spring to come so he can go back to mining and looking for lava fossils in our backyard. So much safer.
