Paul Solman: The third in this week’s series of conversations with economist Simon Johnson has to do with the cap and trade debate — whether cap and trade is a good idea, the feasibility of a carbon tax, and…

The Obama administration is expected to ease travel and financial embargoes with Cuba in broad policy changes that have sparked debate between those in favor of starting a dialogue with Cuban leaders and those who advocate continuing the restrictions. Analysts…

Question: Please explain the trade deficit. What is it? Why is it important? Is it an indicator like taking someone’s temperature or is it a debt that has to be paid? Does it relate directly to our national debt?…