The Arctic

The South Pole is not the only pole to have its own ozone hole now, scientists report.

Second leg of voyage to study changing waters of the Arctic Ocean.

Melt ponds add variation to stretches of sea ice.

Updated charts needed as sea ice loss drives increase in ship traffic.

Iceberg has traveled nearly 2,000 miles in Arctic waters.

Iceberg has traveled nearly 2,000 miles in Arctic waters.

Thar' she blows! Arctic expedition got an eyeful.

Second leg of the mission begins June 25.

Unusually cold weather in the stratosphere destroys 40 percent of the Arctic ozone layer.

Researchers measure the amount of ice melting from huge glaciers.