5 days ago · What is the ozone hole? Each year for the past few decades during the Southern Hemisphere spring, chemical reactions involving chlorine and bromine cause ozone in the southern …

Nov 24, 2025 · Scientists with NOAA and NASA have ranked this year’s ozone hole over the Antarctic as the fifth smallest since 1992 — the year that the Montreal Protocol, a landmark international …

Mar 5, 2025 · In 1985, scientists discovered a “hole” in the ozone layer over Antarctica that opened up during the austral spring, between September and December. This seasonal ozone depletion was …

May 19, 2025 · It's been 40 years since groundbreaking research announced the discovery of a hole in the ozone layer, a revelation that launched a rapid and successful effort to ban chemicals in hairspray,...

Nov 24, 2025 · The so-called “ozone hole” is not an actual hole in the planet’s ozone layer, but rather a large region of Earth’s stratosphere with extremely low ozone concentrations.

Jan 13, 2026 · In the mid-1980s, scientists published a startling finding–a giant hole in the ozone layer over Antarctica. That’s the protective shield that blocks large amounts of harmful UV radiation. And ...

Dec 12, 2025 · In much-needed good news for the environment, scientists have announced that the 2025 Antarctic ozone hole was relatively small and short-lived, confirming the long-term trend …

Dec 4, 2025 · 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.

Data from the Copernicus Atmosphere Monitoring Service (CAMS) confirmed the closure of the 2025 Antarctic ozone hole on 1 December, marking the weakest and shortest‑lived ozone hole in five …

Ozone depletion and the ozone hole have generated worldwide concern over increased cancer risks and other negative effects. The ozone layer prevents harmful wavelengths of ultraviolet (UVB) light from …