Host Lynn Poole reviews highlights of programs from the past year: "Freezing the Atom" (10/10/50) shows how atoms are slowed down and the development of the bolometer; "Electronics at Work in a Vacuum"(10/25/50) describes the development of the vacuum tube and the principles behind it, using puffed wheat in a jar as an example; "Your Questions About Science" (12/26/50) explains and demonstrates atomic chain reaction or nuclear fission using mouse traps and sugar cubes; "The Unbreakable Laws of the Universe" (1/2/51) explains the physical laws governing all things: inertia, action and equal reaction, conservation of motion, gravity, and atmospheric pressure; "Fight Against Polio" (1/16/51) filmed at the Children's Hospital in Baltimore, MD, shows how polio victims are being strengthened and restored to a normal life; "Don't Take Your Heart for Granted" (2/13/51) describes what the heart is, what can happen to it, and how to take care of it; "Archaeology: Key to the Past" (3/13/51) looks at the work of archaeologists and their study of the lost civilization of the Etruscans; "Cancer Will Be Conquered" (4/10/51) features Dr. Gey describing the differences between normal and cancerous cells and showing a magnified, live view of the separation of normal and abnormal human cells; "Is There Science in Art?" (2/27/51) reveals the science of cleaning varnish and dirt from old paintings at the Walters Art Gallery and the art of using x-rays and ultraviolet light to restore old paintings to their original intent. Poole also thanks the studio staff and mentions other favorite programs: "Fear" (103/50), "X-Ray, the Super Sleuth" (12/5/50), "Stream Pollution" (5/1/51), "Don't Drink That Water" (3/20/51), "Schistosomiasis" (11/21/50), and "Magnificent Microscope" (5/15/51).

This program offers viewers an x-ray of a beating heart and its sounds from a stethoscope. Dr. Russell H. Morgan uses a model to describe the construction and function of the heart and its arteries, veins, and chambers. An animation shows the flow of blood through the heart. In a filmed sequence, a patient is injected with uricon so that a slow-motion x-ray view of his blood can be seen passing through his heart and lungs.