Acid rain

The study of acid rain has declined remarkably since the early 1980s, when it was viewed by many as the major environmental problem facing the northern hemisphere. This decline has led one writer to wonder, 'Whatever happened to acid rain?' (Pearce 1990). It certainly has not disappeared, but it is one environmental issue in which abatement programmes have met with some success. Sulphur dioxide levels continue to decline, the rain in many areas is measurably less acid than it was a decade ago, and the transboundary disputes which absorbed large amounts of time, energy and money in the 1980s, have been resolved. There are indications that lakes and forests are showing some signs of recovery in the most vulnerable areas of North America and Europe, although this is still a matter of some dispute.

Developments such as these have created the perception that the acid rain problem is being solved. Interest has declined, and the research funds available have been diverted to causes— such as ozone depletion and global warming— that now appear more relevant. Although acid rain is arguably a less serious problem than it once was, it has not been solved. It has changed in nature and geographical extent, however. In the developed nations, NOX is gradually making a larger contribution to acidity as levels of SO2 decline. In less developed areas, from eastern Europe to China and parts of the southern hemisphere, the full impact of acid rain may still be in the future, and the research activities currently winding down may have to be revived to deal with it.

The Basic Survival Guide

The Basic Survival Guide

Disasters: Why No ones Really 100 Safe. This is common knowledgethat disaster is everywhere. Its in the streets, its inside your campuses, and it can even be found inside your home. The question is not whether we are safe because no one is really THAT secure anymore but whether we can do something to lessen the odds of ever becoming a victim.

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