Changing incandescent light bulbs (right) to LEDs (left) is an example of eco-efficiency, but it can also have unintended consequences.
Often presented as one of the best ways to save energy, eco-efficiency often proves to be less effective than one might think.
Are bulb bans a bright idea?
Encouraging people to buy LED bulbs is not a long-term solution. We need lighting which is kind to the planet and our health.
Many rural communities across Africa have dropped kerosene lighting for various electrical lights.
A lighting revolution is underway across Africa that's occurred largely without government or donor involvement.
Ready layer one.
Layering substances like graphene in new ways could help us to build quantum computers or transmit electricity over long distances.
Light-emitting diodes (LEDs) used in medical devices and for growing plants, like potatoes seen here, are used by NASA to grow plants in space. The U.S. space agency plans to grow food on future spacecraft and on other planets as a food supplement for astronauts.
LED lights can actually improve upon the sun and help grow plants in space. A Canadian team of researchers is helping to refine and perfect LED technology.
The CO2 we produce when we put up buildings is large and virtually unregulated.
That flicker in the corner of your eye isn't your imagination.
New research shows the insects use the brightness of different stars to work out which direction to go.
New LED-based streetlights are whiter than traditional ones and contain more blue light, which can disrupt people’s circadian rhythms.
The American Medical Association (AMA) issued guidelines for communities to reduce harmful effects of LED streetlights. A medical researcher explains what can go wrong.
There are plenty of ways to cut energy use, especially in old houses.
AAP Image/Paul Miller
There are loads of things you can do to cut your energy bills - and many don't involve stumping up any cash up-front at all.
University of Bath
Flexible light-emitting screens mean you soon won't need bulbs because your wallpaper – or even your furniture – will light up at the flick of a switch.
Light of every hue.
During these dark winter months, spare a thought for artificial lights. From strings of lights adding holiday cheer to artificial sunlamps alleviating seasonal affective disorder, they brighten our days…
Laser quest: Shuji Nakamura, one of the three prize winners.
You’ve probably got the fruits of this year’s Nobel laureates’ handiwork in your pocket. In fact, if you’re reading this on your phone or a relatively recent flat-screen monitor, you’re more than likely…