1980s C.E.

Rainforest scene

Colombia establishes Chiribiquete National Park

Chiribiquete National Park is the largest national park in Colombia and the largest tropical rainforest national park in the world. It covers about 17,000 square miles and hosts important archaeological evidence in the form of rock art. More than 600,000 traces of around 20,000 petroglyphs and pictographs have been discovered in the mountain chain, the oldest of which may date to 20,000 years BP.

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03 ozone graphic

46 countries sign the Montreal Protocol in historic move to restore the ozone layer

The Montreal Protocol on Substances That Deplete the Ozone Layer is an international treaty designed to protect the ozone layer by phasing out the production of numerous substances that are responsible for ozone depletion. It was agreed on 16 September 1987 and entered into force on 1 January 1989. The ozone treaty has since been ratified by 198 parties, making it the first universally ratified treaty in United Nations history.

46 countries sign the Montreal Protocol in historic move to restore the ozone layer Read more