Global warming: Melting Antarctic sea ice at record low

Global warming: Melting Antarctic sea ice at record low

The amount of floating ice around Antarctica is suddenly going from record highs to record lows, and it’s confusing scientists. 

For 40 years, ice floating around the South Pole has steadily increased, reaching a record high in 2014.

But just a few years later, Nasa research has shown that the Antarctic sea ice has hit its lowest mark. 

Sea ice is frozen ocean water that melts each summer, then refreezes each winter, and it floats on top of the water.

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