Ice is being lost from every corner of our planet, including Arctic sea ice, Southern Ocean sea ice, Antarctic ice shelves, mountain glaciers, the Greenland ice sheet, and the Antarctic ice sheet. Just over half of the ice loss was from the Northern Hemisphere, and the remainder was from the Southern Hemisphere. The rate of ice loss has risen since the 1990s, owing to increased melting from mountain glaciers, Antarctica, Greenland and from Antarc- tic ice shelves. During this period, the loss of grounded ice from the Antarctic and Greenland ice sheets and mountain glaciers raised the global sea level by more than 3.5 centimetres and has tracked the IPCC's worst case scenario. Earth's ice losses are being driven by atmospheric and oceanic warming, and moni- toring them is key to improved predictions of our future.