Researchers have analyzed data from the last 50 years of medals to learn what presidents consider important and what legacy they hope to leave behind.
Trump's backers say he is shielded from removal as no criminal offense took place. But this view may be at odds with the original intent of the impeachment clause.
Parliaments might argue more but they make democracy more stable and produce stronger economies.
The authors of a new book have data that show politicians and the media love talking about heroes, but ordinary people are much more reluctant. That difference could have political consequences.