Discovery Miracle Planet Disc 1: The Violent Past (2005)

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Peter's DVD rating: 3.5 stars
QE501 .B8182 2005 (551 MIR)
4:00Earth formed from 10 impacts; last gave rise to iron core and moon 4.5 billion years ago 12:30 Barringer Meteorite Crater 50,000 years old (Arizona) 17:30Simulation of 500-kilometer meteor impact 4 billion yeats ago
29:00Ancient bacteria brought back to life: Bacillus permians spores recovered from 200 million-year-old salt crystals from Permian sea (salt lakes American Southwest) 38:00 Anaerobic bacteria found in deep gold mine (3 km) still possess genes for oxygen respiration (South Africa)   
Earth
4:00 moon
Barringer Crater
12:30 Barringer Meteorite Crater
Meteor impact
17:30 500-kilometer meteor impact
Bacillus permians
29:00 Bacillus permians spores
salt crystal
29:00 salt crystals
Anaerobic
38:00 Anaerobic bacteria

Index Feb 21, 2010 CC BY 4.0 Peter Chen 2.0