Reuters: The ozone layer that shields life from cancer-causing solar rays is showing its first sign of recovery after years of dangerous depletion, a U.N. study said on Wednesday, in a rare piece of good news on the environment.
Experts said it was largely down to global action - a 1987 ban on man-made gases that damage the fragile high-altitude screen. The agreement would help prevent millions of cases of skin cancer and other conditions, they added.
The ozone hole that appears over Antarctica has...