Midnight In The Desert — ozone hole

The Hole in Earth's Ozone Layer Is Healing, First-of-Its-Kind Study Shows

Posted by K R on

The Hole in Earth's Ozone Layer Is Healing, First-of-Its-Kind Study Shows

Efforts to heal the hole in Earth's ozone layer over Antarctica appear to be paying off, according to a new, first-of-its-kind study that looked directly at ozone-destroying chemicals in the atmosphere. Earth's ozone layer protects the planet's surface from some of the sun's more harmful rays that can cause cancer and cataracts in humans, and damage plant life, according to NASA. In the mid-1980s, researchers identified a massive hole in the ozone layer over Antarctica and determined that it had been caused largely by human-produced chemicals called chlorofluorocarbons (CFCs). Previous satellite observations have observed changes in the size of the...

Read more →

Ozone hole could close by mid-century

Posted by K R on

Ozone hole could close by mid-century

The Montreal Protocol. It spelled doom for refrigeration and aerosol spray cans, as countries got together and agreed to stop the use of chlorofluorocarbons (CFCs). Industry balked at the aggressive schedule to fully eliminate manufacture of the molecules blamed for eating away the ozone layer shielding inhabitants of our planet, especially in the southern hemisphere, from harmful ultraviolet (UV) rays from our Sun. But somehow we survived. Replacements were found. Freon superpower DuPont even swapped sides, advocating for the ban after CFC replacements developed by their chemists showed promise. It seems like the effort has all been worth it, as...

Read more →

Ozone layer shows signs of recovery

Posted by K R on

Ozone layer shows signs of recovery

The ozone layer that shields life from the sun's cancer-causing ultraviolet rays is showing its first sign of thickening after years of dangerous depletion, a UN study said on Wednesday. Experts said it showed the success of a 1987 ban on manmade gases that damage the fragile high-altitude screen, an achievement that would help prevent millions of cases of skin cancer and other conditions. The ozone hole that appears annually over Antarctica has also stopped growing bigger every year, though it will be about a decade before it starts shrinking, said the report, coproduced by the World Meteorological Organisation and...

Read more →