On 16 September, the world marks the International Day for the Preservation of the Ozone Layer – a day of action initiated by the United Nations. This year’s theme is “From science to global action” – ...

What is the Ozone Layer? The ozone layer is a crucial component of Earth's stratosphere, located between 19 and 30 km above the surface. It plays a vital role in filtering harmful ultraviolet (UV) ...

While continental in scale, the ozone hole over the Antarctic was small in 2025 compared to previous years and remains on track to recover later this century, NASA and the National Oceanic and ...

This year’s ozone hole over Antarctica ranked among the smallest since the early 1990s, reflecting steady progress from decades of global action under the Montreal Protocol. Declining chlorine levels ...