While global warming is still a huge issue which needs immediate attention, it is reassuring to know that we humans can work together to improve the quality of life on our planet when we choose to. 191 countries came together 20 years ago to agree to the Montreal Protocol to discontinue the use of chemicals that deplete the ozone layer. It appears that the efforts are making a difference and the ozone hole is healing. A brief blurb from the 09/17/07 article on the sustainablebusiness.com web site says:
The Earth's ozone layer is on track to heal, thanks to the work of dozens of countries that signed a landmark international environmental agreement initiated 20 years ago.
Known as the "Montreal Protocol," this ambitious treaty requires countries to phase out production and use of compounds that deplete ozone in the stratosphere. Initially signed by 24 countries Sept.16, 1987 in Montreal, this treaty today covers 191 countries and is widely hailed as the most successful international environmental agreement to date.
"Twenty years ago, the community of nations came together to adopt a global strategy for the global challenge of ozone depletion. Today, we at EPA join our international partners in celebrating the anniversary of the Montreal Protocol - a shining example of how human ingenuity, leadership and determination can create a healthier, better world," said EPA Administrator Stephen L. Johnson.