I was just reading about a team of scientists who had created a custom biological catalyst system for splitting water to produce hydrogen.
You can read the abstract here (Warning! Science content).
This is also quite interesting given that it comes only a day after I stumbled onto a website that deals with amateur genetic engineering, which I have found myself thinking about quietly ever since. (The idea first entered my consciousness a few years ago after I read a few fictional short stories that were published in the scientific journal Nature, one dealing with a kid who uses a college fund to order DNA sequencing and synthesis services over the internet to recreate extinct species, and another dealing with a group of biotech neo-punks who like genetically modifying themselves at home so that they can do things like grow beards of feathers and the like). I keep on thinking that it would be cool to get back into some degree of biochem research, and the notion of directed protein evolution to create custom enzymes keeps quietly exciting me, but that’s perhaps another story for another time.