In the engaging educational video titled 'Emily's Science Lab: Cookie Experiment,' host Emily Calandrelli, an MIT engineer and host of 'Emily's Wonder Lab,' explores the fascinating science behind baking soda's role as a leavening agent in baking. Emily conducts a hands-on experiment, comparing two batches of chocolate-chip cookies—one with baking soda and one without. Through this experiment, viewers learn about how baking soda, as a base, reacts with the acidic components in the cookie dough, primarily sugars, to produce carbon dioxide bubbles that cause the cookies to rise and spread during baking. This educational content highlights key concepts in chemistry and culinary science, providing a fun and interactive way to understand chemical reactions and their effects on everyday cooking. The video is both informative and entertaining, making it an excellent resource for teaching foundational scientific principles in an accessible manner.