Sarah Gonzalez

Venezuela's currency is losing value so quickly, residents are trying to trade it for anything else, like sacks of sugar. We meet a woman who helped citizens access U.S. dollars. Now she's on the run.

The Venezuelan government doesn't want you to know the real value of its currency. But Ruben and Mila figured it out. Now they're on the lam.

Sand. It's in buildings, windows, your cell phone. But there isn't enough in the world for everyone. And that's created a dangerous black market.

The medical world has been trying to cure color blindness for centuries. Then a glass scientist figured it out. By accident.

Twenty-three years ago, a lot of countries agreed to follow certain trade rules. If a country broke one of those rules, they agreed the World Trade Organization could make them pay. As the U.S., China and the EU negotiate trade disputes, a look at a past case explains how these issues should get resolved.

The World Trade Organization: Can't live with it, hard to crush your trade opponents without it.

We're in a full-fledged trade war with China. We dig into the list of Chinese tariffs on American products. It gets weird...and delicious.

After his arrest in New York and immigration detention across three states, a 16-year-old has been released. A federal judge ruled there wasn't enough evidence to prove he was an MS-13 gang member.

As the ruthless MS-13 gang targets younger members for recruitment, one of the challenges facing school administrators and law enforcement is figuring out who is in the gang.

The clothes and colors students wear to school, the classmates they speak to and what they're suspended for is being used as evidence in immigration court that students are affiliated with MS-13.