When it comes to records of human history, don’t overlook Earth’s only uninhabited continent. Researchers recently found soot preserved in Antarctic ice that they’ve linked to fires set in New Zealand by Māori settlers, the islands’ first human inhabitants.... Ice cores, which are made up of layers of snow that accumulated annually and were compressed over time, consist of more than just ice, however.... McConnell and his colleagues began analyzing six ice cores drilled in Antarctica....