Is Mother Earth getting "fatter"? I was wondering if during the process of photosynthesis if energy from the sun is actually converted into matter, such as sugers and plant material. I found in a reference book that stated that plants use the energy from the sun for growth but it didn't state at that point that plants actually convert energy from the sun into matter. Later on the article states that plants absorbed energy (light) from the sun. I once read that 8 pounds of sunlight hits the Earth every second. What do you say? Is the Earth getting fatter in this respect?