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 ...

The Antarctic ozone hole closed early in 2025 after one of the shortest seasons in decades, reflecting long-term recovery of the ozone layer.

In 1974, scientists first sounded the alarm about the destruction of the ozone layer caused by human activities. Yet it would take several more years for the global community to reach a consensus on ...

A new study confirms the Antarctic ozone layer is healing as a direct result of global efforts to reduce ozone-depleting substances. A new MIT-led study confirms that the Antarctic ozone layer is ...

In the stratosphere, ozone acts as a protective layer. But in the troposphere, at ground level, this colorless gas is incredibly harmful to human health and the environment in ways scientists are ...

A recent study published in the journal Nature Medicine identifies geographical sources of ozone air pollution and assesses ozone-attributable mortality rates in Europe. Study: Geographic sources of ...