HARBHAJAN SINGH has a PhD in environmental engineering and is also a Registered Environmental Professional (REP) by the National Registry of Environmental Professionals. He currently works as an Environmental Engineer at the United States Environmental Protection Agency in Atlanta, Georgia. He has extensive experience on various aspects of mycoremediation, including fungal metabolism, ecology, biotechnology, and bioreactors and is a member of the International Biodeterioration & Biodegradation Society, International Water Association, and Mycological Society of America.