30-Second Psychology

30-Second Theories: The 50 Most Thought-Provoking Theories in Science, Each Explained in Half a Minute

30-Second Philosophies The 50 Most Thought-Provoking Philosophies, Each Explained in Half a Minute

30-Second Brain

30-Second Anatomy (The 50 most important structures and system in the body, each explained in half a minute.) First Printing edition by Gabrielle M. Finn (2012) Hardcover

30-Second Economics

30-second Religion (The 50 most thought-provoking religious beliefs, each explained in half a minute)

30- Second Politics (The 50 most thought-provoking theories in politics, each explained in half a minute)

30 Second Math