Photosynthesis: Harvesting sunlight safely

The Sun's energy is used by plants for photosynthesis, but excess energy is dangerous. So, plants contain protective mechanisms to dissipate excess energy during bright sunlight, transferring the unwanted energy to light-absorbing pigments. This process is now being dissected at the molecular level, and one group has identified a particular component in the light-harvesting apparatus that has a unique, energy-dissipating function.