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Evolution on an Ecological Scale

Drought on the Galapagos Islands wiped out 85% of finch populations and shifted their evolution in a single generation. Credit: schame87/Adobe

Drought on the Galapagos Islands wiped out 85% of finch populations and shifted their evolution in a single generation. Credit: schame87/Adobe

By Martino E. Malerba

Darwin’s theory of natural selection may be simple and intuitive, but some of its key assumptions are now being called into question.

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