He said that could mean viable microorganisms exist in the lake . NEW : Scientists hope samples will yield previously undiscovered life , evidence of planet 's history . Russia says its scientists have found the lake under 2 miles of ice . The lake has been buried beneath a thick sheet of ice for millions of years .
NEW : Scientists hope samples will yield previously undiscovered life , evidence of planet 's history . Russia says its scientists have found the lake under 2 miles of ice . The lake has been buried beneath a thick sheet of ice for millions of years .