That’s a weird one, but it’s true. Some geeky researchers (can’t imagine someone else to spend time on that one) managed to “make” LEDs from salmon sperm which is considered a waste product of the fishing industry. Professor Andrew Steckl of the University of Cincinnati, used the DNA found in salmon sperm to make LEDs more intense and called them BioLEDs. Steckl is developing them with the help of the Air Force (serious).

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