An investigation into the mysterious people who built Machu Picchu, the 15th-century Inca citadel located in southern Peru.

For two-thirds of the year, the Little Rann is a desert. Suddenly, in August, monsoon winds whip up the Arabian Sea and carry it 100 km inland. The desert and these mounds soon become islands and homes to high concentrations of rarely-seen, endangered and spectacular wildlife.

Containing exclusive material and interviews, "Bios" dives into the history of Brazilian rock band Titãs. TV host Sarah Oliveira looks back at the band's formation in a São Paulo school and their breakthrough hit "Sonífera Ilha", as well as Titãs' moments of crisis. Also included is footage of the band's performance at the SESC Pompéia music hall, some 40 years after their first concert.

Gabon's Loango National Park is home to a group of western lowland gorillas who have become accustomed to biologists who have studied them for almost twenty years. This documentary presents an intimate look at the silverback Kamaya and his family and features a newborn baby gorilla, brave researchers, forest elephants, buffalos and the last remaining wild coastline in the African tropics.

The backstory and legacy of Brazilian rock band Os Paralamas do Sucesso is examined in this fascinating music documentary. With previously unseen footage, access to present-day rehearsals, and a visit to where it all began, TV presenter Roberta Martinelli shines a light on the lives of Herbert Vianna, Bi Ribeiro and João Barone like never before.

Oceanographers have been gripped by a new spirit of discovery and have undertaken the biggest population census of ocean species ever conducted - a "Census of Marine Life". The quest: to find out when and where it all began. Where did the water come from? How was life created in the oceans? And how did it evolve to the enormous diversity we see today? Join National Geographic as we travel more than 4 billion years into the past to uncover how oceans and marine life came to exist.

The Soviet Union was a sinister world. Now the Iron Curtain has fallen, and for the first time we can investigate those rumours.

Renowned actress Michelle Yeoh journeys home to Malaysia to get to know her adopted orangutan, learning from the Sepilok Rehabilitation Centre about the efforts being made to safeguard and sustain this endangered species.

Hosted by Chilean singer Javiera Mena, the episode reviews the career of the former Soda Stereo frontman.

Abel Pintos explores the legacy and great influence of Mercedes Sosa, the woman who revolutionized Argentine folklore. Thus, through interviews with musicians and intellectuals who supported her at the beginning of her career, with her grandchildren who knew her most intimate side, and with artists such as Fito Páez and Charly García, Abel reconstructs and honors the Mercedes figure.

Mexican journalist Arturo Hernández learns about the routine of iconic rocker Alex Lora and that of his band, El Tri, by visiting the dive bars and venues that hold the secret to their success. Also, Arturo visits Alex at his home, where he witnesses firsthand the profound bond between Alex and his wife/manager, Chela Lora.

Stretching along 4,000 thousand miles, the biodiversity of the Brazilian coast is extremely rich. From the temperate South to the equatorial North, the coast of Brazil hosts wild journeys and performances every day.

Wildlife in Rio

This is a journey through the trajectory of the Colombian duo Aterciopelados by the hand of the singer Li Saumet. With exclusive interviews to them and their inner circle, as well as access to unpublished material, this documentary illuminates unknown details and reveals for the first time why they were separated for three years, the deep personal changes they experienced and the relationship that unites them.

The incredible story behind the multi-million dollar moon rock heist at NASA - and how it was an inside job. In July 2002 'physics genius' Thad Roberts and three accomplices pulled off perhaps the greatest ever theft in NASA history at the Johnson Space Centre, Houston, Texas. Using their NASA IDs Roberts, and one female partner in crime, slipped into the centre at night stealing a 600lb safe containing moon rocks from every Apollo mission.

South Florida is the only place on Earth that is home to both the American alligator and the American crocodile (and most recently, the Nile crocodile). But who is the baddest Florida predator?

From extreme speed to bone crushing bites, big cats are some of the most impressive predators on the planet. Each of them is an incredible animal, with its own unique and special set of skills. In Big Cat Games, we will challenge ferocious felines against each other in a series of trials that will determine once and for all who is king of the cats. In the wild they are confident, dominant, and fearless—but they have never had to face anything like this before. Lions, cheetahs and tigers will be pushed to the limits of their natural athletic abilities

The two-hour episode proposes a revealing journey into intimacy and the rediscovery of this figure who marked the music scene with his art. The production has the collaboration of his family, in front of and behind the camera, more than one hundred hours of unpublished material, testimonies and exclusive access to recordings rarely seen.

By way of unearthed material, commentary from Andrés Calamaro’s friends and former bandmates, and an in-depth interview with Calamaro himself, this special explores the multi-instrumentalist, Latin Grammy award-winning artist’s career.