Topic_1____Problems_With_Planet_Earth - Topic 1...

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Unformatted text preview: Topic 1: Introduction: Problems with Planet Earth I. A view of Earth Socrates: "A man must rise above the Earth to the top of the atmosphere and beyond, for only thus will he fully understand the world in which he lives" Socrates, about 399 BC During Socrates' time, the world population was about 200 million (200,000,000 or 2 x 10 8 ), less than the current population of the U.S. (about 260 million). Hoyle: "Once a photograph of Earth, taken from outside, is available, once the sheer isolation of the Earth becomes plain, a new idea as powerful as any in history will be let loose" Fred Hoyle, astronomer, 1948 Earthrise: In November, 1999, the world population hit 6 billion (6,000,000,000 or 6 x 10 9 ). About 140 million people are born each year and 50 million die, so the rate of population increase is about 90 million per year (250,000 per day, or 3 per second!). That represents an annual increase of (90 x 10 6 / 6 x 10 9 ) about 1.6% (doesn't sound like much does it?). Every 1.5 years the same Every 1....
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This note was uploaded on 09/02/2009 for the course GEO 302C taught by Professor Yang during the Spring '08 term at University of Texas.

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Topic_1____Problems_With_Planet_Earth - Topic 1...

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