When scientists at the National Renewable Energy Laboratory (NREL) tried to apply their expertise in solar cell technology to build a green LED light from the ground up, they surprisingly centered the ...
Learn why LED lights are a much more efficient lighting alternative. Thomas Edison perfected the first incandescent light bulb in 1879. It burned for 13.5 hours. And incandescent bulbs are still ...
Gillnets are walls of netting that hang in water and trap fish. They are the most widely used fishing device in the world but also often trap sharks, sea turtles and rays who can't escape and die.
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