If all the ice covering Antarctica, Greenland, and in mountain glaciers around the world were to melt, sea level would rise about 70 meters (230 feet) . This would cause significant changes to the worlds coastlines, with many coastal cities being flooded and land area shrinking significantly. However, it is important to note that all the ice is not going to melt, and the Antarctic ice cap, where most of the ice exists, has survived much warmer times.

If we consider a situation where all of the ice in Antarctica has melted, then it would mean that temperatures had risen way beyond any of the most extreme scenarios of climate change. The tropics would become uninhabitable for people, as would some of the currently most populated parts of the world, forcing everyone closer towards the poles and towards livable climates. Crops would fail, and ecosystems would be devastated, leading to a huge extinction event for all kinds of animal and plant species.

Here are some of the specific consequences that could occur if all the ice in Antarctica were to melt:

• Rising sea levels: The average sea level would rise by about 70 meters (230 feet) worldwide, causing all coastlines to flood and the loss of all coastal cities in the world. Florida would disappear entirely, along with most of Denmark, the Netherlands, Bangladesh, and many small island nations. Some lower-lying countries such as the UK and Uruguay would lose a significant proportion of their land area.

• Shift in gravity: The disappearance of the ice would most likely result in a shift in gravity, causing some areas of land to expand and others to contract.

• Loss of animal life: Many species depend on the ice for their habitat, and the loss of the ice would lead to the loss of animal life across many areas of the world.

• Disruptions to global weather patterns: There would be major disruptions to global weather patterns, ocean currents, winds, and rainfall.

• Extinction event: Depending on the speed of the melting, it could be a huge extinction event for all kinds of animal and plant species, a real apocalyptic scenario.

It is important to note that the entire ice sheet does not need to melt for significant consequences to occur. Even partial melting of the ice sheet could cause rising sea levels and severe impacts on global climate and ecosystems[[6]](https://listverse.com/2023/08/16/10-ways-the-world-would-radically-change-if-antarcti...