Chlorophyll is a pigment in plants necessary for photosynthesis. It is still a mystery how exactly this molecule converts light (photons) into useful chemical energy, but all the ingredients of the process are known. Once the chemical energy is created, it begins the well-understood Calvin cycle of photosynthesis.
When exposed to light, photosynthetic activity gives chlorophyll its characteristic bright green color; when light is not present the pigment has a much darker color.
Scientists have been struggling for years to produce synthetic chlorophyll for improved panels for solar power, with only recent success.
- Wile, Dr. Jay L. Exploring Creation With Biology. Apologia Educational Ministries, Inc. 1998