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The earth's axis is tilted 23.4° relative to the plane of rotation around the sun (It varies from 21.5° to 24.5° with a 41,000 year periodicity.) At the summer solstace (June 20 or 21st) the sun is directly overhead at the Tropic of Cancer and there is 24 hrs. of daylight inside the artic circle.
The area bounded by the Tropic of Cancer on the north and Tropic of Capricorn on the south is known as the "tropics."

Regions - Population:
United Nations 2006 population revision (Millions)
2005 2050 2005 2050
World 6,515 9,191
Africa9221,99814.2%21.7%
Asia3,9385,266 60.4%57.3%
Europe731664 11.2%7.2%
Latin America and the Caribbean558769 8.6%8.4%
Northern America332445 5.1%4.8%
Oceania3349 0.5%0.5%
More developed regions1,2161,24518.7%13.5%
Less developed regions5,2997,94681.3%86.5%
Least developed countries7671,74211.8%19.0%
Other less developed countries4,5326,20469.6%67.5%
- More developed regions: They comprise all regions of Europe plus Northern America, Australia/New Zealand and Japan (see definition of regions).
- Less developed regions: They comprise all regions of Africa, Asia (excluding Japan), Latin America and the Caribbean plus Melanesia, Micronesia and Polynesia (see definition of regions)
Source: United Nations (POPULATION AGEING)
More detail in Reference

Countries & Territories
Maps:
U. Texas, CIA World Maps (Political Map (pdf))
Lonley Planet, National Geographic

Travel Information:
Lonley Planet, Yahoo, Virtual Tourist, rec.travel

Other Information:
CIA World Factbook
1clic1planet.com
US State Department:
Regions, Travel Warnings, Per Diems
Other: Demographics (population, ..)
Longitude and Latitude
See Sunrise - Sunset in Astronomy.

Currency Exchange Rates at:
xe.net and oanda.com

World Tourism Organization (WTO) Statistics Popular World Cities
Popular World Sites
World Crime Rates
Languages
Countryrisk.com | the country analysis resource
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last updated 21 Nov 2002