Description: We thought our work was done when a social media follower helped us identify our popular “unidentified male model” as German naturalist Emil Bessels. Then we discovered he may have murdered his captain during the 1871–73 Polaris Expedition.
Description: On January 24, 1925, for the first time in over a century, a total solar eclipse would be visible across the northern part of the United States. How scientists used a dirigible to observe the phenomenon.