Scientists say Arctic sea ice has reached a record winter low again.
The U.S.-based National Snow and Ice Data Centre says it's the second year in a row that the amount of sea ice at the end of winter was less than any year since satellite monitoring began.
The mark comes during an unusually warm winter all over the North.
Temperatures over the Arctic Ocean for the months of December, January and February were 2C to 6C above average in nearly every region.
Even the North Pole saw above-zero conditions several times this winter.
Some scientists believe the amount of sea ice in the Arctic is related to changes in southern weather.