The correct answer to this open question is the following.
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What motivates the members of the Explorers Club to go on their expeditions is the desire to support research in any form that can result in something positive for humankind in different fields of study.
Since its creation in 1904, the Explorers Club was conceived as an organization that always supported the spirit to leave and discover new things, the spirit of exploration.
The Explorer Club is ready, willing, and able to support any exploration effort of considerable proportions that can result in a positive impact in the fields of science, geography, biology, chemistry, space, and education.