Average reply to 8b: "And how much do you feel you know about solutions to these sorts of environmental problems?". (1) Know nothing at all - (5) Know a great deal. Replies (8) Can't choose are deleted.

In Environment III (2010) - question 8b.
In Environment II (2000) - question not part of the survey.
In Environment I (1993) - question not part of the survey.

A higher score means that more people feel that they know about the solutions to environmental problems. A lower score means that fewer people feel that they know about the solutions to environmental problems.