Bernhard Staehli/Shutterstock May 24, 2024 Heavy water: how melting ice sheets and pumped groundwater can lower local sea levels – and boost them elsewhere Rebecca McGirr, Australian National University; Anthony Purcell, Australian National University; Herbert McQueen, Australian National University, and Paul Tregoning Water is very heavy – and it can move. Until now, changes to water on land have actually offset much of the rising sea level from ice melt. How? Gravity