The products of photosynthesis are easy to point out. Plants, algae and cyanobacteria create the air we breathe and the fuel for food webs as they turn carbon dioxide and water into oxygen and sugars. How photosynthesis works, though, is much harder to pin down. The products of photosynthesis are easy to point out. Plants, algae and cyanobacteria create the air we breathe and the fuel for food webs as they turn carbon dioxide and water into oxygen and sugars. How photosynthesis works, though, is much harder to pin down. Cell & Microbiology Molecular & Computational biology Phys.org – latest science and technology news stories