RUSSIAN SCIENTISTS bore into ancient Antarctic lake. “The need to prevent even the slightest contamination of the lake is acute. Its environment is comparable to conditions on the moons of Jupiter, which are among the candidates for extraterrestrial life. If life exists in Vostok, it may well exist on Europa, one of the moons of Jupiter, which has subsurface icy water. The water in Vostok stays liquid because of the pressure and the warmth of the earth below it.”