Meredith was born and brought up in Adelaide, South Australia, graduated from the University of Adelaide with a First Class Honours degree in History and then completed her B. Phil. at Nuffield College, Oxford. Over the last 20 years she has focused on writing and lecturing about the Polar Regions, in particular Antarctica: the exploration of the continent, its wildlife, and status.
Meredith has researched and worked in Antarctica during four seasons; and been funded by the Australian Antarctic Division and the US National Science Foundation on Humanities Programmes. In 2000 she was awarded the Antarctic Service Medal by the National Science Foundation on behalf of the US Congress.
Meredith has published prolifically, both fiction and non-fiction, on Antarctica and beyond for younger and older readers. Meredith is currently a Visiting Fellow at Wolfson College, Cambridge.