William Friedman, who helped create the NSA and became its first chief cryptologist, declared the Voynich Manuscript impossible to translate. He thought it was an early example of a made-up language. Beinecke Rare Book & Manuscript Library, Yale University hide caption

itoggle caption Beinecke Rare Book & Manuscript Library, Yale University

"Liver buds" grow in petri dishes. The rudimentary organs are about 5 mm wide, or half the height of a classic Lego block. Courtesy of Takanori Takebe/Yokohama City University Graduate School of Medicine hide caption

itoggle caption Courtesy of Takanori Takebe/Yokohama City University Graduate School of Medicine