If we were more musically inclined we might write a ballad singing the praises of graphene -- the magical material that can be used in everything from super-fast CPUs to ultra-efficient solar panels. Sadly, the truth is, we're bloggers and not rock stars for a reason, so we'll just entertain ourselves with the Royal Society's Summer Science exhibition on the carbon nano-structure instead. From July 5th through 10th the London-based science center will run a major hands-on exhibit where participants will get a chance to see g