Title: Snowball Earth how the planet froze and lived to tell /
Authors: Durlacher, Chris.; Barlow, Dilly.; Fairhead, David.; Queiro, Horacio.; Harland, Brian.
Publisher: Films for the Humanities and Sciences,
Year: 2004
Subjects: Snowball Earth (Geology); Earth temperature Research.; Glacial epoch.; Life Origin
Abstract: In this program, scientists discuss the Snowball Earth Theory, and explain the step-by-step scientific detective work that convinced them that 600 million years ago, global glaciation really did occur--and that such a freeze/thaw sequence may be a vital step in the evolution of complex life forms.