Wilkipedia defines Bioremediation as any process that uses microorganisms, fungi, green plants or their enzymes to return the natural environment altered by contaminants to its original condition. Bioremediation may be employed to attack specific soil contaminants, such as degradation of chlorinated hydrocarbons by bacteria.

Link to Wilkipedia Bioremediation Page

Useful Links to Bioremediation Information:

Cornell University Environmental Inquiry
Canadian Government Bioremediation Page
EPA Guidelines for Bioremediation (general)
A Citizens Guide to Bioremediation (EPA)
Humates on Oil and Salt Contamination (Scentific Paper)
Surfactant Modified Zeolites (SMZ's) and Remediation

Research in Environmental Bioremediation:
http://www.clarrc.ed.ac.uk/index.php?option=content&task=view&id=2&Itemid=25

Weekly Publication on Remediation
http://www.remediationweekly.com/volumeonenumberten.html