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Aristotle's' zoology and the classification of species was his greatest contribution to the history of biology, the first known attempt to classify animals into groups according to their behavior and, most importantly, by the similarities and differences between their physiologies -
discovers a world of bodies as micro-polities, each characterized by distinctive constitutions -
made fundamental contributions in mechanics, optics, geology -
Predicted man-made climate change -
Cowles was one of the first Americans to use the word "ecology." In fact, he taught himself to read Danish so that he could better understand the Danish ecologist Eugenius Warming's works -
Eugene P. Odum is well known as one of the "founding fathers" of contemporary ecology, especially for characterizing and promoting the use of the ecosystem in ecological studies.