Jolyon Jenkins investigates the world of online sperm donation and discovers the 'super donors', men fiercely proud of their apparent fertility, who cannot stop giving. Show more

Jolyon Jenkins explores Esperanto, the language designed to bring world peace and harmony, and finds that, despite a century of misfortune, the idealism behind it still survives. Show more

Jolyon Jenkins meets the people zapping their brains with DIY electrical devices, lasers and electromagnets. They want to learn faster, dream better and have spiritual experiences. Show more