The largest ozone hole that was formed over the North Pole this spring has closed, researchers announced late last week. Scientists who were tracking the hole at the Copernicus' Atmospheric Monitoring Service (CAMS) said it reached its maximum size in March at about 11 miles above the surface of the Earth.
Footage shared by the team shows the change of the ozone layer shield over a period of five months. The sudden expansion can be seen around the end of March and disappeared earlier this week.
The ozone layer shields the Earth from most of the Sun's ultraviolet radiation, which is a major cause of skin cancer. Researchers believed the closing of the hole in the ozone layer was not caused by global coronavirus lockdown but by a strong