|
|
国家地理2004一月篇
January 25, 2004
Victoria Land, Antarctica
1997
Maria Stenzel
A geologist hikes above a lake covered by some 19 meters [62 feet] of ice. Despite Antarctica‘s extreme temperatures, the lake is perpetually liquid, its freezing point lowered because of its high salinity—seven times that of sea water.
Scientists have found 2,800-year-old microbes in the ice above the lake. They came to life when thawed. Studying this lake‘s ecosystem could yield clues about life on Mars, where frozen surface water is speculated to hold life-forms.
![]() |
|