giovedì 30 giugno 2016

NYT Science: Ozone Hole Shows Signs of Shrinking, Scientists Say

Ozone Hole Shows Signs of Shrinking, Scientists Say
By HENRY FOUNTAIN

Three decades after a treaty to phase out the use of chemicals known as CFCs, there are indications that the hole in the ozone layer is healing.

Published: July 1, 2016 at 06:00AM

via NYT Science http://ift.tt/297ziBe