Being able to turn any cooler into a real refrigerator or freezer is — no pun intended — pretty cool. Owners of boats, RVs and cabins in remote locations have often desired to convert available space ...

Refrigerators are, despite advances in their design, terribly inefficient. Every time you open the door, the cold air comes cascading right out onto the floor. Chest freezers don't suffer from this ...

Robert Frank: Today’s question was posed by my former student Karim Abdallah. “Why,” he asked, “does a light come on when you open the refrigerator but not when you open the freezer?” The cost-benefit ...