The journal Expert Opinion on Environmental Biology (EOEB) is a hybrid environmental biology journal that gives option to authors to choose their mode of publishing either subscription or open access. In a way, the journal Expert Opinion on Environmental Biology is a free journal of environmental biology where the journal does not charge any fee from those authors who want to publish their articles in subscription mode. Despite the fact that Expert Opinion on Environmental Biology is a free journal of environmental biology, EOEB strictly follows peer review process and publishes quality articles that promotes rigorous research on all aspects of environment including environmental science, environmental issues, environmental waste, bioremediation, environmental biotechnology, environmental toxicology, and environmental pollution that makes a significant contribution in advancing knowledge in all the related fields. Articles submitted to the journal undergo strict peer review by experts and follows the standards of publishing like other competing free journals of environmental biology in the lead. The journal offers paid readership to the online content.