Duff Smith - Revision history

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	While pursuing an evolutionary biology degree at Purdue in 1990, I began thinking about life on Earth in terms of its gravitational ~~definition~~. ~~Terrestrial~~ life ~~certainly has it~~, whether or not ~~you think of it~~ as a constant, ~~continuously~~ unchanging influence since the ~~dawning. However speculative you consider the possibility~~ of life ~~anywhere else~~, the ~~fact remains that~~ if the surface gravity of Earth ~~was~~ different ~~here~~, ~~then life wouldn't be~~ the ~~same~~.		'''Duff Smith''' is an American [[Evolutionary Biologist\|evolutionary biologist]] based in Ocala, Florida, known for relating the [[Expanding Earth]] hypothesis to the surface gravity experienced by terrestrial life.

			==Biography==
			While pursuing an evolutionary biology degree at Purdue University in 1990, Smith began thinking about life on Earth in terms of its gravitational context.

			==Work==
			Smith holds that terrestrial life is shaped by Earth's surface gravity, and that whether or not one regards that gravity as a constant, unchanging influence since the origin of life, life would not have taken the same form if the surface gravity of Earth had been different. He connects this reasoning to the [[Expanding Earth]] hypothesis, which proposes that the radius of the Earth — and therefore its surface gravity — has changed over geological time.

	[[Category:Scientist\|Smith Duff]]		[[Category:Scientist\|Smith Duff]]

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	While pursuing an evolutionary biology degree at Purdue in 1990, I began thinking about life on Earth in terms of its gravitational definition. Terrestrial life certainly has it, whether or not you think of it as a constant, continuously unchanging influence since the dawning. However speculative you consider the possibility of life anywhere else, the fact remains that if the surface gravity of Earth was different here, then life wouldn't be the same.		While pursuing an evolutionary biology degree at Purdue in 1990, I began thinking about life on Earth in terms of its gravitational definition. Terrestrial life certainly has it, whether or not you think of it as a constant, continuously unchanging influence since the dawning. However speculative you consider the possibility of life anywhere else, the fact remains that if the surface gravity of Earth was different here, then life wouldn't be the same.

	[[Category:Scientist]]		[[Category:Scientist\|Smith Duff]]

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{{Infobox scientist
| name = Duff Smith
| image = Duff Smith 1109.jpg
| alt = Duff Smith
| fields = [[Evolutionary Biologist]]
| residence = Ocala, FL, United States
| nationality = USA
| known_for = [[Expanding Earth]]
}}

While pursuing an evolutionary biology degree at Purdue in 1990, I began thinking about life on Earth in terms of its gravitational definition. Terrestrial life certainly has it, whether or not you think of it as a constant, continuously unchanging influence since the dawning. However speculative you consider the possibility of life anywhere else, the fact remains that if the surface gravity of Earth was different here, then life wouldn't be the same.

[[Category:Scientist]]