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- Apparent punch at girls basketball game propels lawmaker into action (2/21/17)4
- Business notebook: Owners ready to roll out the Barrel 131 (2/20/17)6
- Japanese restaurant up and running; owner surprised by fondness of sushi here (2/24/17)
- SoutheastHEALTH, Washington University School of Medicine announce collaboration (2/24/17)18
- Missouri bill would limit transgender school bathroom access (2/22/17)48
- MSHP: McLendon shot in side; autopsy refutes witness account (2/19/17)23
- Annual father-daughter dance provides some fun bonding time (2/19/17)1
- City issues precautionary boil order near Arena Park (2/23/17)
- $22M bond issue would alter Jackson schools (2/22/17)13
Study disputes claim about life in ancient rock
WASHINGTON -- A conclusion that a 3.85-billion-year-old rock contains evidence of life may be in error, according to a study that suggests the rock formed at temperatures too torrid to make life possible.
A study published in 1996 concluded a band of rocks on the Greenland offshore island of Akilia contained a high ratio of the isotope carbon-12, which was interpreted as evidence for the presence of microscopic life billions of years ago.
But the new study, by Christopher M. Fedo, a George Washington University geologist, and Martin J. Whitehouse of the Swedish Museum of Natural History, concludes the Akilia deposit was formed from superheated melted rock and that the enriched levels of carbon-12 could have been caused by chemical action, not by some life form.