This year, we celebrate 35 years of the Vienna Convention for the Protection of the Ozone Layer. In the late 1970s, scientists discovered that humanity was creating a hole in this protective shield and they raised the alarm. Through collective decisions and action, guided by science the global response had been decisive in order to heal the ozone layer by cutting out 99 percent of all ozone-depleting substances.
The ozone layer now is expected to return to pre-1980 values by mid-century.
To enhance their efforts to gain this achievement, in 1985, the world’s governments adopted the Vienna Convention for the Protection of the Ozone Layer.
The slogan of World Ozone Day, hold on September 16, ‘Ozone for life’, reminds us that not only is ozone crucial for life on Earth, but that we must continue to protect the ozone layer for future generations.
What is the Ozone Layer?
The Earth’s atmosphere is composed of several layers, each playing a major role in maintaining life on the planet. The first and most important layer is called troposphere: we live inside of it.
The second layer, the stratosphere contains the ozone layer. The ozone layer is located above the planet, and protects the life on Earth from the dangerous ultraviolet B (UVA and UVB) radiation produced by the Sun.
Sunlight makes life possible, but the ozone layer makes life as we know it possible.
What causes Ozone depletion?
- Human Activity is the main cause of the hole in the ozone layer and is produced by a few chemical substances used by us, such us halocarbon refrigerants, propellants, solvents and foam-blowing agents.
- Natural Sources
- Volcanic Eruptions
What can we do to stop Ozone depletion?
- Find a green alternative to pesticides
- Use natural cleaning products
- Use your car less often
- Avoid using nitrous oxide and support the ban of this dangerous chemical compound