The ozone hole
used to be the biggest ecological problem for our Earth's during the aftershocks period of the 1980s and new modern, technical advancement era of the 1990s. But unfortunately or fortunately it is no longer a matter of concern for us. Either we have become insensitive towards Mother Nature or we are looking for a permanent solution. Whatever It might be, the current situation is really in contrast with our approach and attitude towards the Earth's ecology.
The biggest environmental problem of ozone layer depletion due to hole caused by CFCs (Chlorofluorocarbons) the very culprit gases who were the sole responsible factor for the depletion of our very protective ozone layer which saves us from the harmful rays.
The threat level of this problem was so much to up to such a great extent that it even punched a hole above Antarctica. During that period it was even suspected with a troubling tone that it if the hole widens then the ultraviolet light rays, would cause a severe epidemic of skin cancer and eye cataracts. If It had happened a deadly blow to the whole human civilization would be given.
Maybe God is still somewhere kind to us because even after sinful deeds we still have not learned the simple lesson of our human civilization's very own existence. The rule is a fundamental but existential- "Do not interfere in nature's game or else be ready to be played with"
But it was 1987 and now we are living in the year 2019! With more than 3 decades or shall we say 32 years of unpromising actions tune, the mouth organ of death upon the deathbed would be played very soon.
With more than three decades of passing, we are not thinking about the ozone layer hole because it is gradually filling up for which in the year 1987, worlds leaders had come up together for an international environment protection agreement which meant the ban on CFC's and after that, the ozone layer seems to be closing gradually and would take and will almost take more than 30 years to heal up.
That means we should be risk-free and do not care for our dear planet Earth which we have overturned into a deadly one? No way!
We have to take lessons from the recently failed UN COP25 Climate change talks and understand that CFCs might be the primary reason but there are other factors leading to the rise of global warming also which includes Aerosols and soot, Land use change and minor forcings.