Photosynthesis is the reaction in which plants use light to convert carbon dioxide and water into organic matter and emit oxygen. Thanks to photosynthesis, the organisms on Earth that require oxygen are able to survive and evolve. Accordingly, photosynthesis has been described as one of the best mechanisms to have emerged since life on our planet came into existence. The detailed mechanism had remained shrouded in mystery down through the ages. However, a fragment of that mechanism has now, at last, been revealed. Further studies on the process may lead to the realization of artificial photosynthesis, which will undoubtedly contribute substantially to the combat against global warming.