Detail from (IMAGE) Proceedings of the National Academy of Sciences Caption (Left) Detail from "Ascesa dei Beati" (Michelangelo Buonarroti) from Sistine Chapel; (Right) 16th-century drawing reproducing the same detail. An inscription "di mano di Michelangelo" (from Michelangelo's hand), on the bottom-left side of the drawing, was hidden by a tape and revealed after restoration. Credit PNAS Usage Restrictions None License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.