Who were the first peoples of North America? Anthropologist Niobe Thompson embarks on a voyage of scientific discovery, using the latest in DNA analysis techniques to unlock the secrets behind humanity's earliest appearance in the Americas.
Renowned nature videographer Jeff Turner returns to his roots and embarks on an exploration of the wildlife in the Cascade Mountains to film one of the handful of grizzly bears still left there.
Is your garbage can making raccoons smarter? Stunning footage shot in the deep, dark of night combines with groundbreaking research in this fascinating documentary to explore the remarkable ways that city life is changing raccoons.
In James Cameron's film, Avatar, an alien tribe on the distant planet of Pandora fights the human invaders bent on mining their forest home. Instead of Pandora, think Peru.
David Suzuki, scientist, educator, broadcaster and activist, delivers what he describes as 'a last lecture' interwoven with scenes from his life and lifetime - the major social, scientific, cultural and political events of the past 70 yrs.
One of the most powerful hallucinogenic drugs on the planet: it's called Ayahuasca. There are studies around the world that say that this indigenous cure may also provide answers as to how to treat Western drug addicts.
In Istanbul, Turkey, workers building a tunnel make a remarkable discovery - an ancient harbour, buried and shrouded in mystery. Will archaeologists be able to uncover the treasures of the past before it is buried again?
Scientist Jennifer Gardy turns her critical eye towards the myths, lies, misunderstandings and errors behind the headlines, putting the science of the daily news to the test both in the lab and on the streets.
By declaring that nature must be conquered in the name of progress, Chairman Mao ushered in an era of environmental degradation for China. Now, passionate activists strive to preserve their natural wonders.
A fresh look on autism research with the developing "Bacterial Theory" of autism. The fastest-growing developmental disorder in the industrialized world, autism has increased an astounding 600 per cent over the last 20 yrs.