After Us, or the World as it Might Be, also known as After Us, is a collection of essays in futurology written by British surgeon John Lockhart-Mummery, and published by London's Stanley Paul in 1936. In it, Lockhart-Mummery imagines Britain as it might be in the 25th century using the device of a series of letters home from a New Zealander. He imagines a world where all male children are sterilised shortly after birth, except for those carefully selected. Those exempt from compulsory sterilisation would provide the "seed" for future generations by artificial insemination.