Is it true that too much sun causes mental impairment?

I ask the question because of yet another Yahoo poll I saw today.
The question: Which should be the priority Global warming OR Australia's Economy?

Now you'd think that Australians would be one of the most aware countries when it came to global warming. Every year the drought lasts longer. Farmers committing suicide due to their loss of livelihood are no longer reported as 'News'. It was only April of this year that it was announced that conditions in South Australia had got so bad that a further eight weeks of drought would lead to irrigation being banned in the region: essentially, Australia's Bread Basket - Barren. A case of old Mother Hubbard if ever there was one.


It was international news making the front pages of Newspapers all over the world.

Fortunately rains came two weeks off from the deadline. However you would hope that Australia would see this as a reason to change current practices.


Surely Global Warming is intrinsically tied to Australia's economy?
In fact if Global Warming continues as it is, how many years does Australia have before it has to import it's basic necessities? How soon will we be importing water - already Queensland are discussing building pipelines to redistribute water from areas of abundance to areas of dense population and even then plans would alleviate current need - when they're completed will they match the need at that time?

So imagine my surprise at the results of the poll:
Global Warming 47%
Australian economy 53%

Another victory for John Howard's Thatcheristic rhetoric. Another loss for the Australia environment.