Animals are becomming extinct because of us.
This is a fact, the rate of extinction is running at 10,000 times the natural rate that has been observed from fossil records. one third of amphibians are expected to become extinct in the coming years, 20 percent of insects are in the same situation. Ecological diversity is essential for the eco-system to function (as wikipedia would say, Citation needed

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Anywho, what are we going to do about it? We could clone them, this would still lead to a deminished gene pool. A small gene pool basically means a species is doomed to die out. Maybe artificial breeding programs (artificial insemination and the like) This would bolster the gene pool but is difficult to accomplish at large scale and would be virtually impossible to do outside captivity.
This subject interests me alot and it worries me an equal amount. I would like to know what you think we can do, what we should do, what we cant and what we shouldnt do.