> If 75-80% of ice has already melted, wouldn't we have seen significant elevation already? FTA: > Another is the pending collapse of the Greenland ice sheet,

> If 75-80% of ice has already melted, wouldn't we have seen significant elevation already? FTA: > Another is the pending collapse of the Greenland ice sheet, which Anderson said will raise sea level by 7 meters (about 23 feet). The Greenland ice sheet is on land. https://en.wikipedia.org/wiki/Greenland_ice_sheet https://en.wikipedia.org/wiki/Greenland_ice_sheet Most of the ice that has melted so far was probably already in the water. The ice that is already floating in the water does not change the sea level when it melts. > as long as objects are floating (i.e. they don't rest on the bottom) they displace enough water to support their mass [...] The water level remains the same when the ice cube melts. https://www.physlink.com/education/askexperts/ae389.cfm https://www.physlink.com/education/askexperts/ae389.cfm This link talks about cubes of ice in a glass of water but I think it should apply to ice floating in the sea as well.