03:57 Social Studies Black Friday: An accident of history Lesson duration 03:57 Manage Library 516,896 Views
04:33 Science & Technology What causes the phases of the moon? Lesson duration 04:33 Manage Library 583,185 Views
03:52 Science & Technology All of the energy in the universe is... Lesson duration 03:52 Manage Library 414,848 Views
04:31 Civics The fight for the right to vote in the United States Lesson duration 04:31 Manage Library 722,721 Views
03:25 Physical Science The deadly irony of gunpowder Lesson duration 03:25 Manage Library 3,025,741 Views
02:18 Literature & Language Mysteries of vernacular: Robot Lesson duration 02:18 Manage Library 110,185 Views
06:57 Anthropology Vampires: Folklore, fantasy and fact Lesson duration 06:57 Manage Library 3,730,162 Views
04:34 Public Health How we conquered the deadly smallpox virus Lesson duration 04:34 Manage Library 8,741,310 Views
03:48 Physical Science The strengths and weaknesses of acids and bases Lesson duration 03:48 Manage Library 991,766 Views
03:56 Physical Science Why does ice float in water? Lesson duration 03:56 Manage Library 1,765,190 Views
03:48 Physical Science What is the shape of a molecule? Lesson duration 03:48 Manage Library 314,682 Views
03:47 Physical Science The uncertain location of electrons Lesson duration 03:47 Manage Library 863,370 Views
05:03 Physical Science Why don’t oil and water mix? Lesson duration 05:03 Manage Library 1,212,602 Views
04:08 Performing Arts The science of stage fright (and how to overcome it) Lesson duration 04:08 Manage Library 1,554,329 Views
04:00 Earth and Space Science Why extremophiles bode well for life beyond Earth Lesson duration 04:00 Manage Library 137,038 Views
03:57 Literature & Language Speech acts: Constative and performative Lesson duration 03:57 Manage Library 199,102 Views