We are in the midst of the eleventh presidential nominating cycle since party commissions and state laws made primaries the predominant method of choosing national convention delegates in 1972. Over the years politicians and journalists develop rules of thumb to describe how these things work. In this cycle, some of those rules seem to be changing.

Privacy on the Web is a constant issue for public discussion. Congress is always considering more regulations on the use of information about people's habits, interests, or preferences on the Internet.

Since the Internet reduces the cost of reaching a news source, it can increase the diversity of one's reading by increasing its quantity.

Purchasing drugs over the Internet has significant benefits, but it can also be dangerous.

In his new book, “Phake: The Deadly World of Falsified and Substandard Medicines,” Roger Bate explores the underground trade in illegal medicines that kills over 100,000 people per year and supplants billions of dollars of real products.

Should the polar bear be protected under the Endangered Species Act?

The Facebook phenomenon.

What would a Democratic majority actually mean for U.S. foreign policy?