Complex sentence: Researchers from a company called Algenol have cultured genetically modified cyanobacteria in sea water inside a clear plastic enclosure so they first make sugar (pyruvate) from CO 2 and the water via photosynthesis.
Split into simpler sentences: Researchers from a company called Algenol have cultured genetically modified cyanobacteria in sea water inside a clear plastic enclosure. These cyanobacteria first make sugar (pyruvate) from CO 2 and the water via photosynthesis.