The Day the World Agreed to Heal the Sky
On September 16, 1987, diplomats signed the Montreal Protocol, which grew into the only universally ratified treaty in UN history — and it is why the ozone layer is healing today.
Tagged: ozone-layer
On September 16, 1987, diplomats signed the Montreal Protocol, which grew into the only universally ratified treaty in UN history — and it is why the ozone layer is healing today.