More than one-fifth of US electricity is used to power artificial lighting. Light-emitting diodes based on group III/nitride semiconductors are bringing about a revolution in energy-efficient lighting ...

For the first time in its history, the LED crown atop San Francisco’s Salesforce Tower will feature a video installation ...

After 16 weeks of testing, we noticed visible results. Here are our favorite red light therapy devices for hair growth.

With over 10 years’ experience writing about consumer affairs, Sarah leads on energy content at Which?, helping customers navigate the market and exposing poor practice. Using your heating and ...