Artificial photosynthesis energy conversion efficiency (due to photosynthesis' own low efficiency in converting sunlight to biomass), the cost of harvesting and transporting the fuel, and conflicts due to the increasing need of land mass for food production. The purpose of artificial photosynthesis is to produce a fuel from sunlight that can be stored conveniently and used when sunlight is not available, by using direct processes, that is, to produce a solar fuel. With the development of catalysts able to reproduce the major parts of photosynthesis, water and sunlight would ultimately be the only needed sources for clean energy production. The only by-product
What More Do I Need? finds out through his phone records that there is a number that he calls repeatedly every month. They discover that particular number belongs to Dr. Heller, a criminal psychologist. They attempt to call Dr. Heller posing as an insurance company, planning to get any information from Dr. Heller but failed. However, Dr. Heller is shocked to learn that Dave is currently in Fairview, and decides to book a plane there in the end of the episode. What More Do I Need? "What More Do I Need?" is the 94th episode of the ABC television series, "Desperate Housewives". It is the