Edward O Wilson is arguably the foremost entomologist in the world, and one of our leading naturalists. He has spent most of his career at Harvard University, where he is now professor emeritus of entomology. While his main expertise is in formicology, or the study of ants, he has been deeply involved in conservation and preservation of biodiversity for more than three decades.
From Dr. Wilson's studies on ants, he began to think about human societies, and in the late 90's he began publishing works which create ties between biology and sociology, creating the discipline of sociobiology.
He founded the E.O.Wilson Biodiversity Foundation to further his work in conservation. His NOVA-produced video "Insects: The Little Things That Run the World" has become a science classic, and he has written a number of books, some technical, some for the general reader. He is both an important and also a highly productive scientist.
Yes,he made significant contributions to the scientific world.