Unique Contributions from Comparative Auditory Research.- Transduction and Amplification in the Ear: Insights from Insects.- Roles for Prestin in Harnessing the Basilar Membrane to the Organ of Corti.- Origin and development of hair-cell orientation in the inner ear.- The Remarkable Ear of Geckos and Pygopods.- Ultrasound Detection in Fishes and Frogs: Discovery and Mechanisms.- The Malleable Middle Ear: an Underappreciated Player in the Evolution...