In 2013, the Freedom Project went to Cambodia with Oscar-winning actress and UNODC Goodwill Ambassador against Human Trafficking Mira Sorvino. The result was "Every Day in Cambodia: A CNN Freedom Project Documentary" - which looked at child sex trafficking in the country.
Just this month, it was named "outstanding documentary" by the Alliance for Women in Media Foundation, winning a Gracie Allen award.
Sorvino says the film has raised awareness of the issue, helping to raise funds to build a school that, when completed, will offer hope for more than 1,000 children in the region.
“Primary and especially secondary education is extremely important in preventing trafficking,” she says. “It allows children to develop critical thinking skills to be able to defend themselves from traffickers and to have the skills that will enable them to have gainful employment to be able to support their families in other ways than being sexually exploited.”
But Sorvino adds that it’s not just about helping the victims. “The demand side really needs to be addressed,” she says. “If people weren’t trying to buy child sex it wouldn’t be being sold.”
Today, tens of millions of people are enslaved worldwide.
It’s a global problem, affecting people on every continent, and for the last four years The CNN Freedom Project has been shining a light on modern-day slavery.
Here, we look back at the Freedom Project so far, remembering some of the stories we have covered, and looking ahead at what still needs to be done.