Cultural evolution regards the changes and adaptations to a societies identity, sensitivities, perspectives, and behaviors over time. The transformation of closed societies to globalization is a major example of cultural evolution in action. Demographic changes and global migration are also another driving example of how cultures are rapidly adapting and evolving,
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The eye is a good example because there are living animals with eyes that represent each step in it's evolution. Human eyes also show how evolution can produce "bad" results; the retina is essentially "inside-out" - the nerves are on top and there is a blind-spot where the optic nerve leaves the eye.
character change
a great example is the peppered moth. look up the full story in wikipedia
It depends first on the context and definition of the terms "evolution" and "progress(ive)". The term evolution may be used in many different contexts; such as the evolution of species, or the evolution of technology. And the term progressive may have more than one meaning; such as implying some form of improvement over time, or merely implying non-stasis.Colloquially, the term evolution may refer to progress in terms of improvement. We might say, for example, that the rapid evolution of technology has led to great improvement in the quality of life. However, the same is not true when the terms are applied to science.Biological evolution, for example, describes how populations diverge, adapt, and differentiate over time resulting in new species. We might say that evolution progresses because it is not static, or because information is being added to the genomes of species over time; but not because there was any quantifiable improvement.
There is loads you can do about animals, for example; Evolution. Animal behavior. Stem cell research