Watch clips from Bill's interview with economist and New York Times columnist Paul Krugman.

Once the wealthiest in the world, America's middle class now takes home less income than their counterparts in Canada. And America's poor are lagging even further behind.

Neil deGrasse Tyson explores the surprising connection between the age of the Earth and the dangers of lead.

An increasing body of research shows the government serves only the wealthy. When money talks and you have none, how can you believe in democracy?

Executive pay is out of control, but it pales next to what hedge fund managers claw out of the economy.

Economists and journalists share their reactions to Thomas Piketty's book, Capital in the Twenty-First Century.

Polls show that living wage hikes and paid sick leave bills are popular. So corporate lobbyists have found a workaround.

The Nobel prize-winning economist tells Bill that America is on the road to becoming a society controlled by those with inherited wealth, like "Gordon Gekko's son or daughter."

Bill reflects on the forces that are causing inequality to skyrocket, why it matters and where we're headed in the future.

Economist Paul Krugman explains how the United States is becoming an oligarchy - the very system our founders revolted against.