Mariana van Zeller

Amid the threat of nuclear proliferation, global warming and terrorism, the earth's creator tries to reconnect with mankind by returning to the planet and hosting his own variety show.

The world's oldest profession is now a thriving black market economy, with an underground workforce that's just an Internet connection and a phone call away. National Geographic's Mariana van Zeller journeys to the heart of the American escort industry and uncovers the gritty reality behind the supply and demand of high-end sex work.

For over half a century, civil war paralyzed Colombia and kept much of its wild lands frozen in time. In December 2016, that changed. The war that resulted in the deaths of 220,000 and displaced 6 million people came to an end. And the land wars began. With the FARC officially gone, the forests of Colombia are open for business.

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For over half a century, civil war paralyzed Colombia and kept much of its wild lands frozen in time. In December 2016, that changed. The war that resulted in the deaths of 220,000 and displaced 6 million people came to an end. And the land wars began. With the FARC officially gone, the forests of Colombia are open for business.

Mariana Van Zeller risks all to uncover the dark world of gold mining in Colombia.

Mariana Van Zeller risks all to uncover the dark world of gold mining in Colombia.