In regard to [http://www.conservapedia.com/index.php?title=Science&diff=402631&oldid=402339], [[Flat Earth|Eratosthenes calculated the Earth's radius]] and [http://www-history.mcs.st-andrews.ac.uk/Biographies/Callippus.html Callippus calculated the length of a solar year]. [[User:Drochld|Drochld]] 19:51, 10 March 2008 (EDT) | In regard to [http://www.conservapedia.com/index.php?title=Science&diff=402631&oldid=402339], [[Flat Earth|Eratosthenes calculated the Earth's radius]] and [http://www-history.mcs.st-andrews.ac.uk/Biographies/Callippus.html Callippus calculated the length of a solar year]. [[User:Drochld|Drochld]] 19:51, 10 March 2008 (EDT) |