Arctic winter ice typically reaches its broadest expanse in March, after which, it begins a slow melt over the spring and summer months, shrinking to its smallest area, or minimum extent ...

She cautioned that a record-low area in the winter doesn’t guarantee a record-small area in the summer. Melting Arctic sea ice - mostly in the summer - is making the polar bear population ...

Arctic sea ice had its weakest winter buildup ... She cautioned that a record-low area in the winter doesn't guarantee a record-small area in the summer.Video below: NASA’s chilling animation ...