Why Are Plants Green? To Reduce the Noise in Photosynthesis. Plants ignore the most energy-rich part of sunlight because stability matters more than efficiency, according to a new model of photosynthesis. July 31, 2020sciencehistoryscoper https://www.quantamagazine.org/why-are-plants-green-to-reduce-the-noise-in-photosynthesis-20200730/