23:38 Nature of Science Science can answer moral questions - Sam Harris Lesson duration 23:38 119,563 Views
03:39 Public Health Fresh water scarcity: An introduction to the problem Lesson duration 03:39 623,614 Views
07:31 Data Analysis & Probability Inside OKCupid: The math of online dating Lesson duration 07:31 1,239,995 Views
17:51 Technology Four principles for the open world - Don Tapscott Lesson duration 17:51 21,121 Views
03:35 Technology How did trains standardize time in the United States? Lesson duration 03:35 236,991 Views
03:52 Physical Science How polarity makes water behave strangely Lesson duration 03:52 1,134,849 Views
19:39 Earth and Space Science Earth's mass extinction - Peter Ward Lesson duration 19:39 56,385 Views
