Scientists claim to have found the 'Holy Grail' of science in an artificial leaf that could turn ever British home into its own power station.
The leaf, which is the same size as a playing card, mimics the process of photosynthesis that plants use to convert sunlight and water into energy.
Scientists behind the invention say it could provide an affordable solution to the third world's growing energy crisis.
Dr Daniel Nocera, who led the research team, said: 'A practical artificial leaf has been one of the Holy Grails of science for decades.
'We believe we have done it.'The artificial leaf shows particular promise as an inexpensive source of electricity for homes of the poor in developing countries. Our goal is to make each home its own power station.
'One can envision villages in India and Africa not long from now purchasing an affordable basic power system based on this technology.'