‘The ice sheet represents a potential source of water sufficient to raise sea level by an amount that would flood all major seaports and lowlying land areas.’
Scientists can look at historic ice records to find out about climate change.
In the 1960s, scientists, including Gordon Robin, flew over the polar regions, using radio signals to capture information about the ice sheets and sea ice.
The data they collected showed how thick the sea ice was and showed what was under the snow and ice. They even found several lakes under the ice in Antarctica.
The recordings made are still used today by scientists seeking to find out how much things have changed.