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I don't think 'very little has been done'. More can be done...but the strides made in the last 30 years or more have been huge.
We have saved many species from certain extinction due to pesticides and hazardous environmental impact.
The stripping of rainforests has been slowed.
Stringent regulations have been put in place to control environmental hazards from industry.
Recycling has become a way of life.
More and more, alternative energy comes into play in both homes and business.
Revitalization of many areas of the world has taken place( the Black Forest comes to mind here)
Strip mining has decreased.
Our biggest hurdle is dependency on fossil fuels. How cool would it be to see a new development with a windmill in every yard?
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