Antarctic ice shelves are losing ice by melting from their undersides, as well as by calving icebergs.
A study compiled by a team of British, Dutch and US researchers found the melting of the underside of ice sheets can account for up to 90% of the ice lost in some areas - more than previously thought.
Iceberg calving and melting accounts for 2,800 cubic kilometres of ice leaving the Antarctic ice sheet every year. Most is replaced by snowfall, but where it isn’t the result is global sea level changes.
Read more at Bristol University