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.

A team of US chemical engineers has extracted photosynthetic molecules from plants and attached them to thin sheets of gold, creating a photosynthesising cyborg.