One of our associate curators discusses the origins of idioms with host Mo Rocca, who also shows us an app designed to read for us, a microphone blocker for smart devices and a wireless electronic brake system for inline skates.

Our curator of design discusses a pioneering textile designer with host Mo Rocca, who also shows us a tiny dog vest created to stop predators, a high-tech bus shelter, and aftermarket dash cams designed for safer driving.