Usda Safe Food Handling

Here is a link to the USDA Food Safety and Inspection Service. I has a great deal of information on safe food handling.

It covers:

•  How temperatures affect food
• The Danger Zone
• Storing leftovers
• Reheating
• Cold storage temperatures

http://www.fsis.usda.gov/Fact_Sheets/How_Temperatures_Affect_Food/index.asp