Explains how the President and Congress interact to manage the national debt and set limits on it. [3:49]

Provides an overview of London's complicated history and governance. [4:48]

Explains how Scotland made failed efforts to establish its own empire, and eventually ended up joining Great Britain. [2:32]

Explains the status and history of Hong Kong and Macau as special regions belonging to China. [4:52]

Outlines the pros and cons of Texas becoming an independent country. [3:32]

Explains what jury mullification is, when it might be used, the impact it can have, and why jurors are not told about this option in the verdict decision process. [4:31]

Some countries are enclosed by other countries, which makes for some unusual situations at the borders. [2:05]

Explains why we have leap years, how calendars work, and why we will never have a perfect calendar. [3:58]

Discusses the history of astronomy and how scientists grouped disparate bodies as planets, and why Pluto is no longer considered a planet. [4:45]

This video explains how the 'nocebo effect' works during testing of new drug treatments. It also talks about phenomena such as mass psychogenic illness. [6:47]