@DLorrey, NIWA April 13, 2022 The Zealandia Switch drove rapid global ice retreat 18,000 years ago. Has it switched to a new level? Andrew Lorrey, National Institute of Water and Atmospheric Research (NIWA); Aaron Putnam, University of Maine; David Barrell, GNS Science; George Denton, University of Maine, and Joellen Russell, University of Arizona Rocks deposited by vanishing glaciers in the Southern Alps thousands of years ago hold climate clues about the past, painting a bleak picture about the long-term survival of alpine ice in New Zealand.