The Best LED Reading Lamps
The small size and directional light output of LEDs make them ideal for personal reading lights, and they are energy efficient too. Here are some of the best LED reading lamps:
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Man Retrofits Freezer to Make an Ultra-Efficient Fridge
An off-grid experimenter in Australia, Tom Chalko, has retrofitted a chest freezer to create a fridge that uses only 100 watt-hours (0.1 kWh) per day! Why a chest freezer? Tom points out that vertical door refrigerators are inherently inefficient. As soon as you open a vertical fridge door the cold air escapes, simply because it
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