Hundreds of times stronger than steel, transparent, an excellent electrical conductor, and weighing next to nothing, graphene is hailed as a wonder material. But what is it doing for us now? And where will it take us in future? This week graphene goes under the microscope. We hear how industry can mass produce it, we uncover how it can clean up air in cities, produce the world's fastest lasers, revolutionise communications and boost the power of computers. Plus, news of how Earth's earliest life reproduced, how to regenerate human organs, and why animals have different shaped pupils...