ocr: - THE: SEARCH FOR LIFE METEORITES Doubts THE: SETIPHOGRAM The body of evidence collected by the researchers does not, however, convince all specialists. William Schopf, a paleobiologist at the University of California, is skeptical: Extraordinary assertions call for extraordinary proofs." As Schopf notes, hydrocarbon molecules are found often in many kinds of interplanetary debris, and until now no one has ever claimed they were biological in origin. Untortunately the fossil microorganisms in ALH 84001, which are 100 times smaller than any found on Earth, cannot be chemically analyzed. Accordi ...
