Amazon sells a number of Echo speakers, ranging from the small and affordable Echo Pop, all the way up to the flagship, screen-equipped Echo Show 15. But every model of Echo device shares one trait: ...

A new approach to fabricating light-emitting diodes (LEDs) could be used to increase their efficiency by 20 percent while yielding higher-quality light than conventional LEDs. Researchers at the ...

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 ...

LOS ANGELES -- Bright lights can worsen headaches, but a new study shows an LED light might do the opposite. Doctors Mohab Ibrahim and Rajesh Khanna tested green LED lights and white LED lights on ...