How many different evolution theories are there, because in my own lifetime I've heard various experts promoting opposing viewpoints to Darwin's theories.
Is there evidence for "cross-species evolution? "
Adaptation is not the same as evolution, is it?
Very many top scientists strongly argue against evolution as being "fact", e.g. "Darwin's Black Box" by Professor Michael Behe. In it, he states that (until he published his book) he had not found any scientific paper which addressed or explained the "evolution" of a simple molecule - not a cell.
Despite the expected detractors, it's the other side of the coin for people to look at and weigh up the differing opinions/scientific data.