Morning Edition

Salt is one of those dangerously tasty substances. We add the magical crystals of sodium chloride to almost everything that we cook or bake, and according to many public health experts, we add too much.

They want us to cut back, to lower our risk of heart attacks or strokes.

Yet when you really start looking for ways to do this, you run into a paradox and a scientific puzzle.

First, the paradox. Too much salt may kill us, but our bodies need some of it to survive.

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STEVE INSKEEP, HOST:

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DAVID GREENE, HOST:

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STEVE INSKEEP, HOST:

NPR's business news begins with a global bank settlement.

It's the big Swiss bank, UBS. It announced this morning that it will pay a total of $1.5 billion in fines for its role in rigging the interbank lending rate known as LIBOR. The settlement will be paid to Swiss, British and American regulators.

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Greece got a rare bit of good news late yesterday. Standard and Poor's upgraded the country's credit rating six notches to a B minus. I mean, not the worst grade on your report card, but in the financial world this is junk bond status.

Still, Joanna Kakissis reports from Athens that there is a more stable outlook.

Pakistani gunmen staged new attacks Wednesday on health workers carrying out a nationwide polio vaccination program. Six workers were killed Tuesday as they went house to house to administer the immunizations to area children in Karachi and the northwest city of Peshawar.

Although there were additional attacks, the Pakistani government vowed to continue the vaccination campaign — and eradicate the disease — even if there is bloodshed.

If the sheer variety of holiday music that pops up each winter is any indication, there's no genre that can't handle a little Christmas spirit. This year, Louisiana country singer Sammy Kershaw decided to test that theory with the sounds of the bayou. His new album of Cajun-infused holiday songs is called A Sammy Klaus Christmas.