An article in the Two-Year Community column on page 17 describes a dual-enrollment program that gives high school students an opportunity to experience college science in a supported environment, along with lessons learned and challenges faced by faculty when setting up such a program. On page 34, read how one group of investigators examined whether short "Kahn style" video lectures, assigned as homework, could replace live classroom lectures in the presentation of buffer theory and problem solving. And see page 97 for an article on the development and evaluation of graduate teaching assistant learning communities to enhance the implementation of inquiry experiences in undergraduate laboratories.

Individuals are transported daily in transit vehicles while seated on their mobility aids. Although federal standards exist to regulate this practice, controversy exists over whether the regulations are effective or practical. This article describes an objective and analytical review of information available in several areas relevant to positioning and securing riders and their mobility aids in transit vehicles. The objective of the study was to present the current status of knowledge and to identify gaps in knowledge and related problems. As a result, recommendations are provided on future research needs and options for improvement of policy.