11.   Scientists conduct experiments on several subjects, including the ozone hole, the stability of the Antarctic ice sheets and penguins.

12.   The challenging Ice Prowler project has taken two years between conception and putting two bikes on Antarctic ice.

13.   The PAHs are deep inside the fissures in the rock, and their concentrations are much higher than in Antarctic ice.

14.   The third component of Antarctic ice is a thin layer of frozen ocean, or sea ice, that grows and shrinks with the seasons.

15.   Underneath her Southern charm and smarm is Antarctic ice.

16.   Additionally, he said the amino acids matched those that are found in the Antarctic ice.

17.   Another danger now looms -- icebergs -- since the racers are coming up to the northern limits of the Antarctic ice flow.

18.   He rowed alone across the Atlantic Ocean and spent a winter locked in Antarctic ice.

19.   He said scientists still know too little about the behavior of Antarctic ice sheets to predict whether these ice shelves will remain intact for decades or centuries.

20.   More Antarctic ice shelves face breakup with climate change,