LED lights are the latest thing in home lighting, using less energy and lasting longer than their incandescent cousins. How do they work? Find out in the latest installment of Appliance Science.

I’m something of a headlight nerd. In a previous life, I retrofitted HID projector headlamps onto my 2009 Honda Civic Si for better light output. I’m planning a similar project for my beater 2015 VW ...

Obviously, a compatible LED bulb will need this same interface, but will work differently inside. Inside the LED, [Brian] found two rings of LEDs that took the place of the filaments. He was able to ...