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i noticed the question mark in place of a letter e with a grave accent in the place name of San Jose at International Congress of Dipterology 7 topic.

the culprit is: meta http-equiv='Content-Type' content='text/html; charset=utf-8
if the php, html, css or js files are saved as ansi (iso) format, then the character set should be iso-8859-1 instead of utf-8.