ALASKA AIRCRASH INVESTIGATIONS follows five NTSB members as they risk their lives in extreme environments to access remote crash sites in the unpredictable Alaskan wilderness. From dense forests to raging rivers, there is no place impenetrable for the "Go Team." Every investigation tests these brave men and women, from the seasoned veterans to the rookies who are just beginning their careers in air safety.

In this landmark series, the BBC Natural History Unit explores a vast ocean that stretches nearly 10,000 miles, from Arctic to Antarctic and from sun-drenched tropical reefs to crushing abyssal depths.

Documentaries on any possible subject, the only connection being that they last forty minutes.

Using in part rare out-take footage, the film-making methods and techniques of Charles Chaplin are explored.