ozone hole

NASA Study: Proof of Ozone Hole Recovery

For the first time, scientists have shown through direct satellite observations of the ozone hole that levels of ozone-destroying chlorine are declining, resulting in less ozone depletion. Measurements show that the decline in chlorine, resulting from an international ban on chlorine-containing man-made chemicals called chlorofluorocarbons (CFCs), has resulted in about 20 percent less ozone depletion…

Iceberg on water

Arctic saw second warmest year on record

A NOAA-sponsored report shows that the warming trend transforming the Arctic persisted in 2017, resulting in the second warmest air temperatures, above average ocean temperatures, loss of sea ice, and a range of human, ocean and ecosystem effects. Now in its 12th year, the Arctic Report Card, released today at the annual American Geophysical Union…