natural history

From about 250 Ma to 150 Ma, there were likely multiple global catastrophic events that changed the dominant life forms, mammals being the latest. (44 min)

This episode follows our ancestors from the shallow saltwater seas to the freshwater rivers, then discusses the colonization of land. Mainly Devonian and Carboniferous periods. (44 min)

This episode mainly focuses on the two Snowball Earth events in the Mid-precambrian period, and the effect they had on life. There’s a similar occurrence in the modern day in Greenland. (44 min)

From a BBC documentary series, this episode shows the awesome power of nature seen through amazing time lapse computer animation. (58 min, 5 segments)

This episode chronicles the early stages of the earth’s history, from formation to the mid-Precambrian. There’s an excellent simulation of a 500 km wide asteroid collision, similar to those that formed the proto-planets.