John Otis

A scientist in the study says it's likely the sharks were exposed to Rio de Janeiro wastewater contaminated from human use of cocaine.

About 7.7 million Venezuelans have fled to escape poverty and political turmoil -- about one-fifth of the country's population. It's now a potent issue in Venezuela's presidential election.

A landmark verdict orders Chiquita, one of the worlds largest banana companies, to pay millions of dollars in damages to the relatives of eight Colombian men murdered by a paramilitary death squad.

Venezuela's authoritarian government has been making life complicated for the opposition's campaign efforts ahead of next month's presidential elections.

By many predictions, Venezuela's authoritarian President Nicolas Maduro faces defeat in July's election. And with a host of international criminal prosecutions facing him what's the incentive for him to step aside gracefully IF he loses the election?

It's a show that's got it all — music, dancing, sequins and razzmatazz. And the winning song becomes the official campaign music for President Nicolás Maduro.

Venzuela's opposition finally gets to name a candidate to take on President Nicolas Maduro in July's election. The authoritarian leader has used all sorts of underhanded tricks to seize the advantage.

Every year, the town of San Antero celebrates the hardworking pack animals that haul crops and supplies for farmers who can't afford trucks or motorcycles. There's even a donkey beauty pageant.

We look at how one town in Colombia pays homage to the donkey at one of the country's most popular annual festivals.

The U.S. administration has reinstated sanctions on Venezuela's oil and gas sector, accusing President Nicolás Maduro of failing to commit to free and fair elections.