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Julia Hager
Measures adopted in 1987 to protect the ozone layer have pushed the first ice-free summer in the Arctic back by up to 15 years.
Heiner Kubny
The hole in the ozone layer in the Southern Hemisphere has grown larger than usual this year and is already larger than the entire ice-covered continent.
Scientists discovered that electrons coming from the sun not only cause auroras, but also deplete ozone.
The hole in the ozone layer above Antarctica is one of the largest and deepest in the last 15 years, according to the World Meteorological Organization (WMO).
