Few experts believe Martian rock contains traces of life
Monday, August 7, 2006; Posted: 12:14 p.m. EDT (16:14 GMT)
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At a Washington, D.C., news conference, scientists showed magnified pictures of a four-pound Martian meteorite riddled with wormy blobs that looked like bacterial colonies. The researchers explained how they had pried numerous clues from the rock, all strongly supporting their contention that microscopic creatures once occupied its nooks and crannies.
It was arguably the space agency's most imagination-gripping moment since Apollo. Space buffs and NASA officials said that it just might be the scientific discovery of the century.
"If the results are verified," the late Carl Sagan pronounced, "it is a turning point in human history."
Ten years later, the results have not been verified. Skeptics have found non-biological explanations for every piece of evidence that was presented on August 6, 1996. And though they still vigorously defend their claim, the NASA scientists who advanced it now stand alone in their belief.
"We certainly have not convinced the community, and that's been a little bit disappointing," said David McKay, a NASA biochemist and leader of the team that started the scientific episode.
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http://www.cnn.com/2006/TECH/space/08/07/life.on.mars.ap/index.htmlAn interesting story of reality-based science, working the way it's supposed to work. Neither side in this debate has a monopoly on the evidence or the presentation, and any claim by either side is open to challenge from any quarter. A shame that when science moves into the realm of public policy, these rules are so quickly cast aside.