The Arctic is warming at more than twice the global average.
In fact, the amount of Arctic sea ice that remains in summer has apparently decreased to 25% of what it was 30 years ago.
Some say that it is Antarctic ice, rather than Arctic ice, that is causing sea levels to rise (as Arctic ice floats on the sea), but either way, it is a phenomenon caused by global warming.
Incidentally, when ice that has been frozen for a long time melts, the carbon dioxide inside is released, which leads to further acceleration of global warming.

What should we do in the next 10 years for polar bears, whose population has been halved in 10 years?
When thinking about this, remember that
what we can see and what we can predict is, in the end, only the tip of the iceberg.