Journalist David Grann ventured into the Amazon to find out what became of British explorer Percy Fawcett who vanished there in 1925. But then Grann got lost himself. He speaks with anchor Marco Werman about his journey there...and back.

Audio Slideshow: The Lost City of Z

Lost in the Amazon

Into the Amazon: Alex Gallafent in the rainforest (May 2008)

Correspondent Pascale Harter visits a Kenyan village to examine tribal relations, a year after Kenya's leaders signed a power-sharing agreement aimed at ending the post-election violence that broke out among tribes.

Our daily geography puzzler.

Anchor Marco Werman speaks with Alain Hubert, project manager for the Princess Elizabeth Station on Antarctica. It's the first polar research base powered entirely by the wind and the sun.

Location of Princess Elizabeth Station (flag): Google Earth

For today's Geo Quiz we were looking for a former convict settlement in a town located on Tasmania, Australia. The answer is Port Arthur. Producer Jake Warga, takes us on a ghost tour of the historic prison.

Biologists at the University of Washington in Seattle have discovered a new fish in Indonesia they suspect could be tens of millions of years old. Anchor Marco Werman has details.

Anchor Marco Werman speaks to the leader of the group Tumi and the Volume. Tumi is from South Africa. He writes lyrics that promote political awareness and hopefully bring about positive change in South Africa.