This article emphasizes the benefits of bioengineering but does not discuss concerns about its safety. Note that there may be bias here, since this article is sponsored by a biotechnology industry organization.
Presents articles about this issue. Greenpeace, an environmental group, does provide "About Us" information, as well as footnoted references. Content for both sites could be checked at a FDA site and at sites of organizations such as the Pew Initiative or Union of Concerned Scientists.