Plants have a sophisticated machinery to convert solar energy from sunlight into chemical energy and food. The visual system of organisms, based on photosensitive proteins and transduction, helps organisms find food and survive. Jellyfish bioluminescence improve survival and reproduction. Thus, optogenetics, a new frontier in light-activated therapies, is just an extension of light as a driving force in natural evolution.
This past spring, scientists at the Massachusetts Institute of Technology (MIT), the Tokyo Institute of Technology, and the University of Sheffield designed a miniature ingestible robot that unfolds inside a patient to act as a micro-surgeon, performing rudimentary non-invasive operating procedures.