PALEOBIOLOGY:
Lake Vostok Probe Faces Delays
Richard Stone
CAMBRIDGE, U.K.--Scientists have discovered tantalizing evidence that microbes are living under nearly 4 kilometers of antarctic ice, leaving them more eager than ever to explore a vast lake beneath the ice sheet. But a host of issues--including how best to probe for life, who should pay for the big-science project, and whether scientists should cut their teeth on smaller subglacial lakes--may delay any plunge into one of the world's most isolated ecosystems.