We explore synthetic biology in this Naked Scientists Show, finding out how to learn from, and improve on, the structures and systems we find in nature. We'll meet the team of students who designed a biological sensor to win the international genetically engineered machine competition, or iGEM, and find out how to build bespoke proteins. In Kitchen Science, we feed an egg to some enzymes to find out how biological washing powder works. Plus, what the brain does when it sees a familiar face, genetically modified crops boost resistant bug numbers, how to create hair cells, essential for hearing, in the lab and how Tibetans living the high life have different genes to their lowland neighbours!