03:47 Environmental Science Where we get our fresh water Lesson duration 03:47 Manage Library 429,745 Views
18:12 Life Sciences How bacteria "talk" - Bonnie Bassler Lesson duration 18:12 Manage Library 596,796 Views
17:51 Technology Four principles for the open world - Don Tapscott Lesson duration 17:51 Manage Library 20,889 Views
03:39 Civics The historical audacity of the Louisiana Purchase Lesson duration 03:39 Manage Library 691,441 Views
03:35 Technology How did trains standardize time in the United States? Lesson duration 03:35 Manage Library 224,189 Views
03:52 Physical Science How polarity makes water behave strangely Lesson duration 03:52 Manage Library 1,040,590 Views
21:20 Sociology Our loss of wisdom - Barry Schwartz Lesson duration 21:20 Manage Library 86,127 Views
19:39 Earth and Space Science Earth's mass extinction - Peter Ward Lesson duration 19:39 Manage Library 54,970 Views
03:56 Life Sciences What if we could look inside human brains? Lesson duration 03:56 Manage Library 215,918 Views
04:52 Earth and Space Science Life of an astronaut Lesson duration 04:52 Manage Library 697,916 Views
02:50 Literature In on a secret? That’s dramatic irony Lesson duration 02:50 Manage Library 1,678,927 Views
07:12 Life Sciences Parasite tales: The jewel wasp's zombie slave Lesson duration 07:12 Manage Library 109,880 Views
03:51 Medical Conditions The coming neurological epidemic - Gregory Petsko Lesson duration 03:51 Manage Library 37,625 Views
03:56 Environmental Science Do the green thing - Andy Hobsbawm Lesson duration 03:56 Manage Library 31,012 Views
06:00 Writing/Composition Slowing down time (in writing & film) Lesson duration 06:00 Manage Library 210,199 Views
19:17 Civics Learning from past presidents - Doris Kearns Goodwin Lesson duration 19:17 Manage Library 71,762 Views
15:34 Anthropology Digging for humanity's origins - Louise Leakey Lesson duration 15:34 Manage Library 38,913 Views