This continuing series gathers and presents original research results on the leading edge of medicine and biology. Each article has been carefully selected in an attempt to present substantial topical data across a broad spectrum. Topics discussed include new discoveries in endocrine disruptors; depressed brainstem auditory electrophysiology in cerebral palsy; control of aldosterone synthesis and secretion; health of Latino children of immigrants; biomechanics of the ankle and hindfoot and hypoplasia of the internal carotid artery.