Summary #1176

Why are plants green?

eurekalert.org
  • Researchers created a photosynthesis model based on complex networks (cellphone, brains, power grids).
  • Based on this model, they found that photosynthetic organisms protect themselves from sudden increases in solar energy by absorbing only specific colors of light.
  • Absorbing only parts of the solar spectrum allows them to minimize noise in the output (=generated energy) of their solar cell system.
  • It’s simple physics, it allows these organisms to protect themselves, conserve energy, and - most excitingly - it is consistent with a lot of biological observations.
  • This is the first qualitative proof that photosynthetic beings (like plants) have colors (say, green) in order to protect themselves from absorbing too much energy.

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