In the Dec. 23 & Jan. 6 SN: Our top stories of 2017, grounded pterosaur hatchlings, protectors of the Dead Sea Scrolls, a counterintuitive metamaterial, neutron star sizing, arrow of time reversed, E. coli in flour and more.
On December 2, 1942, scientists watched as the nuclear reactor that had been constructed beneath the University of Chicago’s football stadium produced the first controlled, sustained fission chain reaction.
National Archives and Records Administration
DOUBLE LIFE Actress Hedy Lamarr longed to be recognized for her inventions.
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LOOKING FOR NEW LANDS A historian argues that climate, along with other factors, impeded Europeans early attempts at colonizing North America. English explorer Henry Hudson is depicted here meeting Native Americans in 1609 in what’s now New York.