They are however, finding more and more evidence DISPROVING evolution:
Fossil Site
Evolution—past and present
There are basically two ways evolution could be proven: either by fossils—evidence from the past—showing it has occurred in the past, or by studying mutations and natural selection—evidence from the present—to see whether it could occur at all.
Evolution, one species changing into another, never occurs today. (For mutations and natural selection, see our page: Microevolution and Macroevolution.) Therefore we must study the past. Clearly, evolutionists only have the fossils to prove their theory. If evolution ever happened, there should be a large number of transitional forms in the fossil record. Scientists have collected millions of fossils in the past 150 years, and all they have found was evidence disproving evolution.
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I realize that this is a Christian site, but I've read this other places too, this one just has it very concisely explained, while still making the point.
I personally am a Christian, but I don't know what I believe as far as Intelligent Design. I tend to lean with the group that says that a "day" in the creation story is not the same as a day today.