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Faculty wives do not appreciate Dr. Segal's slimy pets. "They want to know what a big lug like me is doing with slugs. I try to explain, but most of them aren't listening. They're just being polite." The National Science Foundation feels differently, has given Dr. Segal a $21,000 grant in the hope that his study of the slugs' ability to adjust to temperature may provide clues in helping humans adapt to tough environments—such as high altitudes or outer space.