5/2/2004:

Intermediate Word:  bulemia  (a) insatiable appetite  (b) wating away cause by anorexia  (c) lack of appetite  (d) very overweight
Difficult Word: - bouleversement  (a) violent uproar  (b) street sign  (c) personal ad  (d) declining fortune


New Clues To Origin Of Life - SpaceDaily  A new discovery of microbial activity in 3.5 billion-year-old volcanic rock and one of earth's earliest signs of geological existence sheds new light on the antiquity of life, says University of Alberta researchers who are part of a team that made the groundbreaking finding. This evidence of life in the basaltic glass on the seafloor comes in the form of textures produced by microbes as they dissolve the glass, said Banerjee. "These textures include channels or tubes produced by the microbe as it tunnels through the glass, possibly using the glass as a source of nutrients," he said.  Another interesting aspect to the research, said Muehlenbachs, is that the rock type they studied is the same as on the surface of Mars. "Martian rocks would also have glass that would retain a record of life activity-we could learn a lot from them as well."
Ancient Pebbles Provide New Details About Primeval Atmosphere - SpaceDaily  Analysis of 3.2-billion-year-old pebbles has yielded perhaps the oldest geological evidence of Earth's ancient atmosphere and climate. The findings, published in the April 15 issue of the journal Nature, indicate that carbon dioxide levels in the early atmosphere were substantially above those that exist today and above those predicted by other models of the early Earth. The research implies that carbon dioxide, perhaps aided by another greenhouse gas such as methane, helped to keep the planet warm enough for life to form and evolve.  

Bone marrow stem cells help mend broken hearts  - Nature  Stem cell therapy might help repair ailing hearts, a clinical trial suggests. Researchers harvested stem cells from patients with cardiac failure, and then transplanted the cells into their damaged hearts. Six months later, the hearts functioned significantly better than those of patients who had not received the therapy. The results suggest that stem cell transplants are a good way to treat heart failure, researchers told the American Association for Thoracic Surgery meeting in Toronto this week. But the study will fuel the ongoing debate over the usefulness of stem cell therapy for cardiac problems. Animal and human studies have yielded conflicting results, leading some to question the effectiveness and safety of the technique. Patients received up to 30 injections into sites where there was obvious muscle damage. Subsequently, their hearts were able to pump more blood than those who had surgery alone. Critically, there seemed to be no side-effects or complications. Earlier this year, a stem cell trial in South Korea was halted after some heart attack patients began to develop abnormal growths in their arteries.





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