The story of DNA unfolds on iTunes U

Evolution — one of a variety of programs on iTunes U created as part of the Cassiopeia Project — tells the fascinating story of DNA and the role it has played in the 3.5-billion-year evolution of life on earth. Other Cassiopeia Projects explore Quantum Mechanics, the Big Bang Theory, Relativity and other topics in an effort to make “high-definition science education videos available to anyone who wants them.” (link)