Gallium Nitride (GaN) is a synthetic semiconductor that can be used to make LEDs. It emits brilliant light and uses very little electricity and make that as their green steps.

However, until now, researchers had to grow GaN on expensive sapphire wafers. These high production costs kept GaN from widespread use.

Recently, though, scientists at the Centre for Gallium Nitride at Cambridge University discovered that GaN could be grown on silicon wafers, instead. This new method can produce LEDs for a tenth of current prices.

GaN LEDs are also incredibly energy-efficient and long-lasting. They can burn for 100,000 hours, or so, the article states.

Plus, unlike current energy-saving bulbs, GaN LEDs do not contain mercury. Start taking green steps now