After Tanzania, then called Tanganyika, became independent from Britain in 1961, the country's leader, Julius Nyerere, made Swahili the national language to unite its people.
Walter Bgoya tells Ben Henderson about his conversations with Nyerere and how the policy changed Tanzania.
(Photo: Julius Nyerere. Credit: Keystone via Getty Images)
In October 1975, 90% of women in Iceland took part in a nationwide protest over inequality.
Factories and banks were forced to close and men were left holding the children as 25,000 women took to the streets.
In 2015, Vigdís Finnbogadóttir, later Iceland's first female president, told Kirstie...
In the 1950s, Soviet scientist Dr Vladimir Demikhov shocks the world with his two-headed dog experiments.
He grafts the head and paws of one dog onto the body of another. One of his creations lives for 29 days.
He wants to prove the possibilities of transplant surgery, which was a new field of...