Perhaps you would be better about lowering your carbon footprint if lighting up your home required a sample of your own blood. Designer Mike Thompson thinks so.
His concept Blood Lamp calls for users to break off the top of the bulb-shaped glass, cut their finger on the jagged edge and then mix a tablet in with their own blood. Some sort of mysterious, unexplained chemistry ensues and the bulb glows. Not exactly the most practical device ever—plus the lesson about reducing your carbon footprint might backfire in the long run. Consider how many of these bulbs you would need, how many you would throw away and how many Band-Aids it would take to dress your wounds. It seems that it would end up doing more harm to harm the environment than good. [Mike Thompson via The Design Blog]