Video from The 2012 R. Lowry Dobson Memorial Lecture featuring Walter Alvarez, Big History and ChronoZoom now online!

Try ChronoZoom now (HTML5 version, link updated Dec 2016)
ChronoZoom 1.0 Archive Site:
ChronoZoom is the Zoomable timeline for Big History
With ChronoZoom, you can browse history, rather than digging it out piece by piece.
ChronoZoom is a timeline for all of history: From the Big Bang, to the time of the dinosaurs, to the present.
Try it Now
ChronoZoom 1.0 Proof of Concept >>
Cal Day 2011 Presentation
Video webcast now available >>