If I remember correctly, when scientists first started measuring the hole in the Ozone Layer they came to the conclusion that the hole was getting larger because of HCFC’s and CFC’s. The hole started to close and it appears it is a natural phenomenon producing variations in the layer. Scientists jumped to false conclusions and brought the Politicians and Journalists with them. The next thing you know you cannot purchase certain chemicals without a license, some chemicals like refrigerant 12 and others are outright banned via the Montreal Protocol and when the hole started closing these CFC's were categorized as chemicals that added to global warming instead of those that made the hole in the Ozone layer.
While the destruction of the environment is a serious problem that needs to be addressed, the people that preach to us are living the most opulent lifestyles that kings and tyrants from long ago could not even dream of. Their industries pollute and use massive amounts of energy and the cash they rake in comes directly from the cultures that burn oil and coal by the tanker load.
Sawdring, I make it a point to listen to what the scientists (and more to the point peer reviewed journals) are saying about global warming rather than be distracted by politicians or their lifestyles. The question of what’s causing global warming is a purely scientific question.