A large-scale funded project exploring the origins and significance of Zero is resulting in scholarly presentations first on the ZerOrigIndia site and then on YouTube. The presentations are about 15 minutes long, followed by a small discussion. Check out Paul Ernest's presentation (the second in Session #1), titled "Nought Matters: The History and Philosophy of Zero." Find it 20.5 minutes in.
See http://www.TheZeroProject.nl for this and subsequent expert talks, appearing every Sunday for next 6 months. See also https://www.facebook.com/zerorigindia.