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LED

A proof-of-concept device built by MIT researchers demonstrates the principle of a two-stage process to make incandescent bulbs more efficient. This device already achieves efficiency comparable to some compact fluorescent and LED bulbs. Photo courtesy of

Can we recycle light? And can it help us fight global warming?

Science

A group of scientists say they have discovered a new way to recycle light and they’re demonstrating it with old-fashioned incandescent light bulbs.