In densely populated coastal areas, reactions of polluted air with sea salt aerosol from the ocean can lead to high surface ozone levels that affect air quality. Chlorine has become infamous for ...

Holes in the ozone layer formed not just over Antarctica—as they currently do each spring—but over the Arctic, too. By 2040, the ultraviolet (UV) index, the measure of the sunburn-causing radiation ...

The ozone layer 11 to 40 kilometers above Earth’s surface filters out most of the Sun’s ultraviolet radiation, which can cause skin cancer and cataracts. From the mid-1970s, chemicals called ...

It has now been almost four decades since scientists discovered the growing hole in Earth's ozone layer. But climate ...

Here’s a closer look at the Montreal Protocol and how it’s countering climate change. Located 15–35 km above the Earth’s surface, the ozone layer acts as a shield, protecting humans, animals and ...