1 . That guy's a real loon .
2 . To van Loon, human achievement mattered above all things.
3 . Why are loon hatchlings in Wisconsin emerging deformed from their eggs?
4 . Van Loon did not shy away from controversial statements.
5 . Van Loon participated in Franklin Delano Roosevelt's 1940 presidential campaign.
2.large somewhat primitive fish-eating diving bird of the northern hemisphere having webbed feet placed far back; related to the grebes
3.a person with confused ideas; incapable of serious thought