Oceanographer Dr Helen Czerski and zoologist Dr George McGavin carry out an ‘autopsy’ on the North Sea to understand the startling changes taking place in the world's oceans. Show more
First broadcast: on BBC Two ScotlandLatest broadcast: on BBC Four
Documentary telling how Frenchman Philippe Petit fulfilled his dream of walking on a wire strung between the rooftops of New York's Twin Towers in 1974. Show more
