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This Philips LED bulb is the winner of the DOE's $10 million competition to develop a low-cost, energy efficient, high-performance replacement for the incandescent bulb.

The conventional wisdom is that it always makes sense to reuse or remake products rather than to make new ones--why make a new tire when you can retread an old one, and why manufacture a new inkjet cartridge when you can refill a used one? But conventional wisdom is often wrong. In some cases, it may actually be more resource and energy-efficient to manufacture new products, according to a new study from MIT

This week, the lighting startup company vu1 is beginning to ship a new type of lightbulb that could displace compact fluorescents and LED lamps as the energy-saving bulb of choice. The technology, known as cathodoluminescence or electron-stimulated luminescence (ESL), offers similar energy savings, but provides a more natural quality of light. [break] [More]