Scientists have already produced artificial photosynthesis, but it has been an exotic process until now. You aren't about to replace the oxygen-giving plants around your home, in other words. However, researchers at Florida State University researcher have found a way to make it practical. They've developed a single-layer manganese oxide material that efficiently traps sunlight and makes it easy to break down that energy into hydrogen and oxygen. Current light-gathering techniques, like solar cells, frequently need multiple layers just to work at all -- this would be far cheaper and simpler to make.