This is brilliant. The pre-fab Groundfridge will store as much as 20 refrigerators underground without using electricity.

This is brilliant. The pre-fab Groundfridge will store as much as 20 refrigerators underground without using electricity.

"Northern Lights Tile". Tiles appear black at room temp, but move through the color spectrum when the temperature changes.

"Northern Lights Tile". Tiles appear black at room temp, but move through the color spectrum when the temperature changes.

Pinterest
Search