It's now 16 teams down to four. Forget about college basketball's March Madness. We want to know if you've been keeping up with the World Baseball Classic. Teams from 16 countries have fought for the final four slots.

The latest action last night in Angel Stadium in Anaheim California saw Team USA up against Mexico. Mexico went into the 9th inning with a slim 2 to 1 lead. The game went down to the wire. USA had the tying run on first base with one out. But Mexico's pitcher David Cortes needed only one pitch against USA's Vernon Wells to wrap things up.

SFX game announcer...(crack of the bat) "...To short, this could be two, there's one, he pulls it out a double play and team Mexico has eliminated Team USA in the World Baseball Classic.....cheers.

Four teams from four Asian and Latin American countries are left standing in the tournament. We want you to name those teams.

The answer's on deck...

For today's Geo Quiz -- we're heading clear across Russia. One way to traverse Russia is to ride the Trans-Siberian railway.

It's a week-long journey, almost six thousand miles in all. With enough determination, you could also drive that distance.

Sasha Borodin is attempting to do just that.

He's driving from Moscow all the way to Russia's Far East.

Now here's the question:

How many time zones will this intrepid traveler cross as he makes his way east?

The answer is just down the road a bit.

For today's Geo Quiz, we're headed to one of south-central Asia's frontier cities. And we're taking a bus to get there.

It's destination was the provincial capital of Pakistan's North West Frontier province. The city's name literally means "city on the frontier." It's near the famous Khyber Pass through the mountains that divide Pakistan and Afghanistan.

Looking back towards Pakistan, on the Pakistani side of the Khyber Pass

This frontier city was historically part of the Silk Road. Today it was the final stop for a historic bus ride. Stop and try to name that Pakistani city.

Here's the windup and now the pitch for today's Geo Quiz.

We're looking for a country whose team still has a shot at winning the World Baseball Classic. This country has produced some terrific baseball talent, especially pitchers. One of our favorites way back when was Red Sox ace Luis Tiant.

In 1975, El Tiante won 18 games and pitched a shutout in the opener of the World Series at Fenway Park.

These days Tiant is helping young pitchers find their groove at spring training. See if you can find your groove with our quiz and name Luis Tiant's home country.

Here's one more hint...

The country's team may have been a little distracted during yesterday's game against the Dominican Republic. A plane flew over the ballpark in the fifth inning. It was pulling a banner that denounced the country's president.

We're raising the flag over today's Geo Quiz.

The country we're looking for has a new national flag. The previous one was good enough for 200 years.

But it wasn't good enough for the president of this South American country. He decided the flag needed an eighth star, a bow and arrow, and a machete.

About 20,000 people attended the ceremony. Most cheered.

But some critics called the new flag a waste of time and money.

Name the country that raised its new flag yesterday.

Today's Geo Quiz requires just a little reasoning and logic. We're searching for a city in Tuscany.

It's ground zero for an unusual competition. Some of the world's top Sudoku puzzle solvers have gathered there to match wits. There are no special formulas or math needed to solve the 3 X 3 grid, Sudoku number puzzles. Just intense concentration.

The same might be said of our Geo Quiz. So, the Italian city we want you to name sits on the banks of the Serchio River that flows into the Ligurian Sea. Organizers of the Sudoku event say Italian newspapers today feature headlines like this one:

(in Italian) ... and in English I would say 22 countries from all over the world to compete for the first Soduko championship.

So can you name the five-letter Italian city ... beginning with "L" where the Sudoku championship is underway?

For today's Geo Quiz, we're headed south of South Island.

Ever notice that some things come in threes? Three strikes, three meals a day, and three-ringed circuses.

The same can be said of New Zealand's main islands.

Fewer than 400 people live there. The island's only town goes by the name of Half Moon Bay.

In the Maori language, the island is called Rakiura. It means "island of Glowing Skies." Locals say that's a reference to the Aurora Australia, or the southern lights, that appear at these southern latitudes.

So, try and name this island of glowing skies.

For our Geo Quiz today -- we're going where no woman has set foot for over a thousand years.

We're looking for a mountain that forms a peninsula in northern Greece. Its name means "Holy Mountain."

It's home to twenty Orthodox Christian monasteries.

There's a strict custom here among the monks: women are forbidden, even female animals are banned.

The monks pray for enlightenment here, but many Greek women believe they're living in the Dark Ages:

"They oppose anything that has to do with new ideas with women's rights this is the way they think."

So pray tell, what's the name of this Greek, all-male outpost at the edge of the Aegean Sea?

Today's Geo Quiz is dedicated to Malian blues singer and guitarist Ali Farka Toure, 1939-2006.

The World's Marco Werman remembers the man who left a legacy of music, including the tune named Diaraby that we play during our daily Geo Quiz.

Hear more of Ali Farka Toure's music in today's Global Hit.

For today's Geo Quiz, say cheese.

No, we're not asking you to you pose for a photo. We just want to quiz you about your knowledge of cheese.

There are hundreds of different varieties. Madison, Wisconsin hosts The World Championship Cheese contest later this month... And it features more than 1800 cheeses from around the globe.

Picking a favorite won't be easy. There's blue cheese, white cheese, smelly cheese and cheese full of holes. But whether it's Swiss Emmentaler, Italian Parmigian, Dutch gouda or English cheddar doesn't matter in this geo quiz...

We just want to know which country produces the most cheese?