The latest national and international news, exploring the day's events from a global perspective.

Steve Backshall visits Australia's Great Barrier Reef to discover the conditions that let a tiny coral building block create Earth's largest living structure. Show more

Lucy Worsley explores the ordinary and the extraordinary lives of women in the home at a time when respectable women were defined as maids, wives or widows. Show more

Alice Roberts looks through 45 years of Horizon archive material to see how science came to understand sex, strived to solve our problems with it and even helped us do it better. Show more

Artist Lachlan Goudie presents a personal documentary, inspired by his father, in which he investigates why witches have cast such a powerful spell over generations of artists. Show more

Dr Jago Cooper visits the ruins of Tiwanaku in the Bolivian Andes and finds evidence of an ancient people with amazing understanding of their environment. Show more

Documentary following a team of underwater archaeologists and experts as they use CGI to reveal the secrets of Pavlopetri in Greece, the world's oldest submerged city. Show more

Steve Backshall visits Australia's Great Barrier Reef to discover the conditions that let a tiny coral building block create Earth's largest living structure. Show more

Lucy Worsley explores the ordinary and the extraordinary lives of women in the home at a time when respectable women were defined as maids, wives or widows. Show more

Artist Lachlan Goudie presents a personal documentary, inspired by his father, in which he investigates why witches have cast such a powerful spell over generations of artists. Show more

Alice Roberts looks through 45 years of Horizon archive material to see how science came to understand sex, strived to solve our problems with it and even helped us do it better. Show more