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					 			      	Prehistoric Time Line, Geologic Time Scale, Photos, Facts, Maps, and More - National Geographic
					 			      	 
 Prehistoric time line, geologic time scale, photos, facts, maps, and more from National Geographic. http://science.nationalgeographic.com/science/prehistoric-world/prehistoric-time-line
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					 			      	History of Geology
					 			      	 
 List of articles pertaining to the history of geology. http://historyofgeology.fieldofscience.com
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					 			      	How Science Figured Out the Age of Earth - Scientific American
					 			      	 
 For centuries scholars sought to determine Earth's age, but the answer had to wait for careful geologic observation, isotopic analyses of the elements and an understanding of radioactive decay. http://www.scientificamerican.com/article/how-science-figured-out-the-age-of-the-earth/
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					 			      	Catastrophism - Wikipedia
					 			      	 
 Catastrophism is the theory that the Earth has been affected in the past by sudden, short-lived, violent events, possibly worldwide in scope. https://en.wikipedia.org/wiki/Catastrophism
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					 			      	Humboldtian Science - Wikipedia
					 			      	 
 Humboldtian science refers to a movement in science in the 19th century closely connected to the work and writings of German scientist, naturalist and explorer Alexander von Humboldt. https://en.wikipedia.org/wiki/Humboldtian_science
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					 			      	History of Geophysics - Wikipedia
					 			      	 
 The historical development of geophysics has been motivated by two factors. One of these is the research curiosity of humankind related to Planet Earth and its several components, its events and its problems. https://en.wikipedia.org/wiki/History_of_geophysics
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					 			      	History of Geomagnetism - Wikipedia
					 			      	 
 The history of geomagnetism is concerned with the history of the study of Earth's magnetic field. It encompasses the history of navigation using compasses, studies of the prehistoric magnetic field (archeomagnetism and paleomagnetism), and applications to plate tectonics. https://en.wikipedia.org/wiki/History_of_geomagnetism
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					 			      	History of Climate Change Science - Wikipedia
					 			      	 
 The history of the scientific discovery of climate change began in the early 19th century when ice ages and other natural changes in paleoclimate were first suspected and the natural greenhouse effect first identified. https://en.wikipedia.org/wiki/History_of_climate_change_science
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					 			      	Age of the Earth - Wikipedia
					 			      	 
 The age of the Earth is 4.54 ± 0.05 billion years This dating is based on evidence from radiometric age dating of meteorite material and is consistent with the radiometric ages of the oldest-known terrestrial and lunar samples. https://en.wikipedia.org/wiki/Age_of_the_Earth
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					 			      	History of Geology - Wikipedia
					 			      	 
 The history of geology is concerned with the development of the natural science of geology. Geology is the scientific study of the origin, history, and structure of the Earth. https://en.wikipedia.org/wiki/History_of_geology