What is the run-time of the DVDs?
The DVDs are designed as presentation tools, with menu-driven access to each clip. They are not designed to be used by simply pressing play and letting it run. Surprising Studies Volume 1 has a total of 20 videos on it. Surprising Studies Volume 2 has 15 videos. Surprising Studies 1+2 combines all of the contents of both DVDs onto a single DVD. You can learn more about each DVD by visiting the products page.