Snowball Earth
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650 million years ago Earth froze, pushing life to the edge of extinction.
Directing
Tom Stubberfield · Director
Production
Sarah Winter · Production Manager
Guest Stars (6)
Dr. Jim Gehling as Self - Palaeontologist
Dr. Shad O' Neal as Self - Glaciologist
Dr. Joseph Kirschvink as Self - Geobiologist
Dr. Don Perovich as Self - Geophysicist
Dr. Hazel Barton as Self - Microbiologist
Dr. John Power as Volcanologist