This week in Science, a hybrid car that was green before green was cool, the possible future of solar energy, a couple of interesting concrete concepts, and a whole lot of medical innovations. Oh, and robots. One that takes a licking and keeps on ticking, and others that can go where no man wants to go.
Earth day was this week, so we have featured some green concepts and innovations. We always like seeing more efficient ways of doing things, and a road that powers its own lighting and traffic systems is a great example of that. But first, the world's first hybrid car.