Close-up of an ice core sample from the Antarctic, 1999 

Two scientists working with an ice core sample apparatus from the Antarctic, 1999 

Microscopic view of phytoplankton from an ice sample from the Antarctic, 1997 

Microscopic view of phytoplankton from an ice sample from the Antarctic, 1997 

Scientists being transported by crane between the ship and the ice in the Antarctic, 1999 

Researchers digging a trench to study microbes living in ice fissures in the Antarctic, 1999 

Close-up of a trench dug by researchers to study microbes living in ice fissures in the Antarctic, 1999 

Scientific team aboard ship in the Ross Sea, near Antarctica, 1999 

Iceberg in the Ross Sea, near Antarctica, 1999 

The Ross Ice Shelf [?], near Antarctica, 1999 [?] 

Icebreaker "Nathanial B. Palmer", in the Antarctic, ca.1998 

Sailing ship Endurance trapped and crushed by ice in the Antarctic, 1915 

Iceberg in sea ice, near Antarctica, 1980s-1990s 

Underwater view of the ice above, Antarctica, 1980s-1990s 

Ice in the Ross Sea [?], near Antarctica, 1980s-1990s 

Multi-colored ice or mineral crystals [?], Antarctica 

Two emperor penguins, McMurdo Ice Edge, Antarctica, 1989 

Four emperor penguins and a toy penguin on the ice, McMurdo Ice Edge, Antarctica, 1989 

Chart showing 7 countries' claims on Antarctic territory, after 1975 [?] 

Underwater view of the ice above, Antarctica, 1980s-1990s