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Unformatted text preview: Topic 1: Introduction: Problems with Planet Earth I. A view of Earth Socrates: &quot;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&quot; 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: &quot;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&quot; 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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- Spring '08