The sun is the ultimate source of energy for virtually all organisms. Photosynthetic cells are able to use solar energy to synthesize energy-rich food molecules and to produce oxygen.

One of the most momentous events in the history of life involved endosymbiosis—a process by which one organism engulfed another and, instead of ingesting it, incorporated its DNA and functions into ...

After decades of failed attempts, scientists have finally succeeded in coaxing animal cells into photosynthesizing. So far, ...