Responsible for the green color of plants, the essential mechanisms for the emergence of photosynthesis have just been explored at the level of plant cells. Scientists from the Universities of Neuchâtel (UniNE), Geneva (UNIGE) and Grenoble (F), as well as from ETH Zurich, reveal their discoveries in the journal eLife. Combining biochemistry, electron microscopy, and 3-D computer reconstruction, the phenomenon can now be visualized in moving images over time.