Old-fashioned light bulbs could be set for comeback after ‘light recycling’ breakthrough

The warm glow of an old electric light-bulb, which has been banned in many countries because it is so energy inefficient, may soon be making a comeback following a breakthrough in “light recycling”.

Old-fashioned electric light bulbs can no longer be sold in Britain and the rest of the EU. They have been replaced by more efficient compact fluorescent bulbs and the newer light-emitting diode (LED) bulbs – but that could soon change with the invention of a hyper-efficient incandescent light bulb.