Even if temperatures and conditions went flat from this point forward, we anticipate that Arctic ice would eventually disappear.

Feedbacks in the system are starting to take hold. The consecutive record-low extents make it pretty certain a long-term decline is under way.

Feedbacks in the system are starting to take hold. We could see changes in Arctic ice happening much sooner than we thought and that is important because without the ice cover over the Arctic Ocean we have to expect big changes in Earth's weather.

The degree of retreat was greater than ever before.

We think that these feedbacks are starting to take hold and that we're going to see an accelerated decline in sea ice.