Comrades! Comradettes!
Johannes Grenzfurthner presented Sierra Zulu at TEDxVienna 2011.
He will return for TEDxVienna 2012 to give an update and screen Earthmoving — Sierra Zulu’s short film prequel (featuring Jeff Ricketts, Martin Auer).

TEDxVienna 2012 @ Odeon, Taborstraße 10, 1020 Vienna, Austria.
November 3, 2012.