Four to six players band together as a team, and compete in divisions of 4 – 7 teams in one of six ratings sections.
Many of these links also appear where appropriate below.
James Hutton and William Smith advanced the concept of geologic time and strengthened the belief in an ancient world.
See more information about "Strata" Smith and his original geologic map of England.
Information about Simon Winchester's delightful biography of Smith, The Map That Changed the World is available at Tree-Ring dating is based on the principle that the growth rings on certain species of trees reflect variations in seasonal and annual rainfall.
Team 45 45 League provides team competition to internet chess players who like slow time controls, on the premier place to play chess on the net, the Internet Chess Club.