The Montreal Protocol implemented over 30 years ago was meant to help stop the substances that caused the ozone layer to wear. A recent study shows proof that the protocol is working. As a result of people going into isolation our carbon footprint has also diminished.
- Back in 2000 there had been evidence of a reduction of harmful substances such as the chemicals in aerosol sprays or industrial solvents.
- However, greenhouse gases such as CO2 are rising. While these gases don't affect the ozone layer directly they're responsible for global warming.