Hank introduces us to that wondrous molecule deoxyribonucleic acid – also known as DNA – and explains how it replicates itself in our cells. References: http://www.nature.com/nature/dna50/watsoncrick.pdf http://publications.nigms.nih.gov/thenewgenetics/chapter1.html http://rst.gsfc.nasa.gov/Sect20/A12.html http://www.nature.com/scitable/topicpage/discovery-of-dna-structure-and-function-watson-397 http://www.uic.edu/classes/phys/phys461/phys450/ANJUM04/ http://www.buzzle.com/articles/dna-replication-steps.html http://www.dnareplication.info/stepsofdnareplication.php... Read more »