Witness History Folgen

The wingsuit is the ultimate in extreme sports clothing. The aerodynamic outfit allows base jumpers and skydivers to free-fall for longer before opening a parachute.The road to creating it was littered with casualties, but in 1999 skydivers Jari Kuosma and Robert Pecnik developed the first commercial wingsuits.In 2019, Jari told Jonathan Coates how exciting, but also how dangerous they can be.(Photo: Jari in his wingsuit. Credit: BBC)

In 1985, British scientists made what would turn out to be one of the most important environmental discoveries of the 20th century - finding a hole in the earth’s ozone layer.The British Antarctic Survey, based in Cambridge, had been monitoring ozone levels for more than 30 years using the Dobson Ozone Spectrophotometer.But it was only when they compared previously uncharted figures from the 1980s with the previous decade that they made the shocking finding, as Jonathan Shanklin, the man who compiled the data, told Jane Wilkinson.(Photo: Ozone hole in September 2006. Credit: Universal History Archive/Universal Images Group via Getty Images)

In February 1990, Nasa space probe Voyager took a famous photo of Earth as it left the Solar System.Seen from six billion kilometres away, our planet appears as a mere dot lit up by the sun, giving a sense of humanity's small place in the universe.In 2020, Darryl Morris spoke to Nasa planetary scientist Candice Hansen, who worked on the Voyager programme. A Made in Manchester production for BBC World Service.(Photo: Earth - a pale blue dot. Credit: Nasa/JPL-Caltech)