Travis Haglin

In The Social Organism, Luckett and Casey offer a revolutionary theory: social networks - to an astonishing degree - mimic the rules and functions of biological life. In sharing and replicating packets of information known as memes, the world's social media users are facilitating an evolutionary process just like the transfer of genetic information in living things. Memes are the basic building blocks of our culture, our social DNA. To master social media - and to make online content that impacts the world - you must start with the Social Organism.

Now a major ITV drama series, Mr Selfridge is a tale of Edwardian excess and the rise and fall of maverick retailer Harry Gordon Selfridge. In 1909 London's first dedicated department store opened in a huge blaze of publicity. Zola called Selfridges a 'great cathedral of shopping', and its high priest was Harry Gordon Selfridge, father of modern retailing, philanderer, gambler, dandy and showman.