Veteran political commentator, linguist and author John McWhorter weighs in on race in America.

Bill sits with historian Simon Schama to see what examining America's past can reveal about our future.

The Houston superintendent was tapped to be Secretary of Education — but was his model so "successful" thanks to high cheating drop-out rates? And should insurance companies treat chemical addit

NOW examines how the tuna industry's influence on the FDA may cause mercury poisoning, discusses the health of US democracy compared to Great Britain, and looks at a model healthcare facility.

NOW with Bill Moyers reports on accusations that managers at some Wal-Mart stores often pressured employees to work overtime without pay, saving the company millions in wages.