barnum and bailey /oss/taxonomy/term/5340/all en The Right Chemistry: P.T. Barnum Was a Champion of Critical Thinking /oss/article/history-videos/right-chemistry-pt-barnum-was-champion-critical-thinking <p></p><div class="media-youtube-video media-element file-default media-youtube-1"></div> Fri, 09 Apr 2021 20:32:54 +0000 Joe Schwarcz PhD 8696 at /oss