Our curator of transportation discusses the history of toll roads with host Mo Rocca, who also shows us how police dogs are being kept safe on the job, the safety vest lighting the way for nighttime runners, and the webcam that's revolutionizing video calls.

Our curator of agriculture & the environment shares the history of mechanized tomato harvesting with host Mo Rocca, who also shows us a water-filled blanket, the filter keeping washing machine microfibers out of the oceans, and building a better mousetrap.