Council for Environmental Education. Where there are differences of opinion or competing scientific explanations, the range of perspectives should be presented in a balanced way. The materials list the people involved in development and review, and their organizational affiliation. Opinions or policies of an agency or organization are clearly identified. Scientifically and socially credible positions and explanations are covered thoroughly, while other positions are also mentioned.
Materials communicate areas of consensus among scientists or other experts.
Openness to inquiry. Materials should encourage learners to explore different perspectives and form their own opinions. There are exercises that encourage learners to understand the opinions of their peers. Materials suggest projects that encourage learners to collect and analyze their own data and to compare those data to similar data from other places. Activities encourage learners to become discerning readers and observers of media coverage of environmental matters.