Chemical Ban Credited as Ozone Layer Begins to Close

More than 30 years after scientists first found a hole in the Earth's protective ozone layer, they are seeing signs that it is beginning to heal. A study released Thursday in the journal Science says the hole is getting smaller. Researchers attribute the good news to the declining release of chlorofluorocarbons into the air. "It isn't just that the patient is in remission,'' said the study's lead author, Susan Solomon of MIT. "He's actually starting to...

© La Voix de l'Amérique - jeudi 30 juin 2016