We've all basked in the glow of different light bulbs: incandescent, fluorescent, halogen, neon, LED, and more. But a lamp that harbors living, light-emitting bacteria -- a biological bulb, if you ...

Coloured light can be used to control how genetically-engineered organisms behave | Science & technology ...

Many peoples throughout history used the warmth of the Sun to heal. Others used lamps or light split into different colours, which we still use today.