John Otis

Venezuela's opposition are holding a primary to elect the candidate who will take on President Nicolas Maduro in next year's elections. The Maduro government is not making campaigning or voting easy.

Venezuelans continue to leave their homeland in record numbers. It is the largest refugee exodus ever recorded in the Western Hemisphere.

Colombia's capital is home to 11 million people — and to some of the worst traffic jams in the world. Now Chinese companies are building its first metro line.

Mayor Edilberto Molina relocated to a nearby town last year after drug-trafficking guerrillas threatened to kill him. He's not the only Colombian politician forced away by threats from criminal gangs.

Reporter John Otis catches up with one Colombian mayor who faces so many threats from criminal groups — that he's been forced to govern — largely from exile.

When you're stuck in the traffic, think of Bogotá. One study claims the Colombian capital has the world's worst rush-hour traffic. After more than 80 years of vacillating, Bogotá is getting a metro.

Colombian artist Fernando Botero has died at the age of 91. "I don't paint fat women," he once told Spain's El Mundo newspaper, "I am interested in volume, the sensuality of the form."

"Everywhere you dig, you will find something — because Lima was home to great civilizations," says a museum director in the capital. "But it's impossible to save everything in a poor country."

The top tourist destination in Peru is the Incan citadel of Machu Picchu. Not so well known is that the capital Lima also holds many ancient ruins — so many that that they can't all be taken care of.

After years of political gridlock, Venezuela's opposition is coming together ahead of next year's general election to try to defeat the country's authoritarian leader.