Solar power in the future
All life on earth is powered by the sun. The base of all life is plants, which capture the sun's energy through photosynthesis. Predator animals eat vegetarian animals, who eat plants, thus sharing the same captured sun energy around all other life forms.
If plants can do it, can we learn to do this too? Plants use the most efficient system for energy capture that we know of, making human efforts look very poor by comparison. The biggest dream of solar power is to understand how plants capture energy well enough that we can make an artificial copy of the process that can generate power.
This is precisely the work being done by Daniel Nocera, professor of chemistry at MIT (Massachusetts Institute of Technology) in the USA.
Read more about his work here