The Archean Eon and the Hadean University of California Museum of Paleontology.
Easy Web Click "Geology" - then "Geological timeline" - and then possibly "overview" or "Proterozoic" or other period.
A New Picture of the Early Earth New York Times.
Evidence of Archean life: Stromatolites and microfossils (pdf) J. William Schopfa, Anatoliy B. Kudryavtsevb, Andrew D. Czajac and Abhishek B. Tripathic.
Snowball Earth Debate about Snowball Earth theory.
Snowball Earth: New Evidence Hints at Global Glaciation 716.5 Million Years Ago Science Daily.
THE LATE HEAVY BOMBARDMENT ENDS From BBC with three videoclip.
Snowball Earth, or Not? Ole Nielsen has two articles about Snowball Earth on his blog My Opera - with many links.
Proterozoikum Snowball Earth - Entstehung der Tiere - Ediacara-Fauna -pdf. Lesson by Wolfgang Kiesling - Rather scientific, but with incredible impressive pictures.
New Evidence Supports Three Major Glaciation Events in Distant Past Fra NASA Earth Observatory.
Solar Luminosity - Wikipedia
Svensmark: The Cloud Mystery -youtube Documentary by Lars Oxfeldt Mortensen. - 52 minutter. Svensmark has demonstrated the effect of the cosmic radiation on the climate: "The cosmic radiation (which hits the surface of Earth) has decreased by approx. 15% in the last 100 years. This has caused that there are now fewer low clouds over the Earth. The low clouds have a cooling effect in the atmosphere, and since there are fewer of them, we have here probably the explanations for much of the warming of Earth's atmosphere by 0.7 degrees Celsius, that has happened over the last 100 years."
Earth's Climate History (Kindle Edition) by Anton Uriarte.
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