Part 1 of 5 · freeIntroduction
In 1985, British scientists stationed in Antarctica could not believe their own measurements: part of the sky seemed to have lost its protection against the Sun. It was not an instrument error but a real hole in the ozone layer, the invisible shield that protects us all. This course tells how the world discovered that danger and how, for once, it managed to repair it.
The rest is in the Sophia app.The remaining parts, the open-book quiz and the full glossary. Free to start; Premium unlocks everything.
- 2A fragile shield, a very handy poison
- 31985: the shock, then the global deal
- 4Why the climate is harder
- 5A slow but very real recovery
Open-book quiz10 questions whose answers are in the text.
Glossary14 terms explained in a tap.
30 languagesThe same course, from French to Japanese.
