Ecologist Kirsti Abbott on ants: 'tiny things that run the world'

Helen's study of powerful historical women, She-Devils was adapted for TV by the BBC.

After Dennis and his wife found their daughter having a fit, she was diagnosed with a form of epilepsy that doctors said would stop her from walking, talking and reading.

Dennis began his working life as a shearer, loving the hard work and camaraderie of the shearing shed.

As a part of his research Luke moved into a household in outer Melbourne with a couple of old friends, who were both users.

Cie Cie Nguyen was 13 years old when a radio broadcast in her home city of Saigon announced the fall of the government.

Living in the forest with five friends, Claire learned how to make fire, build a humpy, and find bush food.

Frank is an expert on the bugs that invade our systems and make us feel terrible for a few days... or present us with a life-threatening illness.

Michael Stoddart explains the profound link between our sense of smell and human evolution.

Investigative journalist Sarah Ferguson co-created the ABC TV series The Killing Season.