Glaciers 'cry'

The Arctic sea ice has been significantly thinner in recent decades, the permafrost is gradually being replaced by seasonal ice changes.

According to the researchers, the Arctic ice cap expands every winter and melts or gets wind and ocean currents swept away in the summer. But in recent years, this sea of ​​ice is becoming thin about 18 cm in every winter.

Between 2004 and 2008, permanent ice shrinks over 595,000 square miles (about 957,000 km2) - roughly the size of Alaska. The area of ​​permanent ice over the years has decreased by 42%. And if this keeps up, people will soon no longer be able to see the eternal ice in the North Pole.

In addition, many species of animals living in this area such as polar bears, seals, penguins . are also threatened with extinction due to global warming and illegal hunting.

See a set of photos about the Arctic sea ice