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New hypothesis for origin of life proposed

Life may have begun in the protected spaces inside of layers of the mineral mica, in ancient oceans, according to a new hypothesis.

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Keywords: hypothesis, origin, life, proposed, hypothesi

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1. Good for the goose, not so great for the gander
   02-07-2007 · EurekAlert!
   A provocative new model proposed by USC molecular biologist John Tower may help answer an enduring scientific question: Why do women tend to live longer than men? The model suggests how, on a genetic level, the evolution of aging and sex may be inextricably linked. It concludes that sexual differentiation processes may exact a high biological cost -- reduced function of the cell’s mitochondria and shorter life span in males.
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2. Females do best if they wait a while
   04-05-2007 · EurekAlert!
   Starting to breed late in life is a bad idea if you want to maximize the number of offspring that you produce -- or so the theory goes.But doubt has now been cast on this hypothesis -- one of the biggest assumptions in behavioral ecology -- by researchers from the universities of Bristol and Cape Town and published today in Current Biology.
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3. How did chemical constituents essential to life arise on primitive Earth?
   10-30-2007 · EurekAlert!
   Chemists at the University of Georgia have now proposed the first detailed, feasible mechanism to explain how adenine, one of the four building blocks of DNA, might be built up from the combination of five cyanide molecules. The investigation is based on extensive quantum chemical computations over several years.
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4. Dartmouth researchers find the root of the evolutionary emergence of vertebrates
   02-11-2008 · EurekAlert!
   Dartmouth College researchers and colleagues from the University of Bristol in the U.K. have traced the beginnings of complex life, i.e. vertebrates, to microRNA. The researchers argue that the evolution of microRNAs, which regulate gene expression, are behind the origin of early vertebrates.
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5. Ape gestures offer clues to the evolution of human communication
   04-30-2007 · EurekAlert!
   Researchers at the Yerkes National Primate Research Center, Emory University, have found bonobos and chimpanzees use manual gestures of their hands, feet and limbs more flexibly than they do facial expressions and vocalizations, further supporting the evolution of human language began with gestures as the gestural origin hypothesis of language suggests.
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6. MU researcher presents origin-of-life theory for young Earth
   10-02-2007 · EurekAlert!
   Scientists have been trying to find the origin of Earth's adenine and where else it might exist in the solar system. University of Missouri-Columbia researcher Rainer Glaser may have the answer. Glaser is hypothesizing the existence of adenine in interstellar dust clouds. Those same clouds may have showered young Earth with adenine as it began cooling billions of years ago, and could potentially hold the key for initiating a similar process on another planet.
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7. Does endurance exercise promote life-threatening changes in athletes' hearts?
   01-21-2007 · EurekAlert!
   Some high-level athletes who take part in endurance sports can develop a rare but life-threatening condition called ventricular arrhythmia (VA). Now, a new study has shown that most of the athletes with VA have dysfunctional right ventricles. The finding adds weight to the hypothesis that endurance sports might contribute to changes in the heart that lead to dysfunction and heart rhythm disturbances, according to a report published in the European Heart Journal.
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8. ESF helps Europe play lead role in new age of astronomical discovery
   07-04-2007 · EurekAlert!
   Astronomy is entering a new golden age of discovery led by breakthroughs in telescopes and instruments making them capable of observing distant events early in the life of the universe. There is now great optimism that one of the fundamental questions of cosmology, the origin of galaxies, will be resolved within the next decade or sooner.
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9. Origins of life
   11-17-2006 · EurekAlert!
   The origin of life lies in unique ocean reefs, and Rosenstiel School scientists have developed an approach to help investigate them better. An article published in Geology this month reveals how Dr. Miriam Andres' stromatolite investigation -- the first of its kind -- has begun to "fingerprint" ancient microbial pathways, increasing the understanding of how these reef-like structures form and offering a new way to explore the origins of these living records.
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10. Penn study finds pro-death proteins required to regulate healthy immune function
    08-10-2007 · EurekAlert!
    Researchers have found that proteins known to promote cell death are also necessary for the maturation and proliferation of immune cells. The results bolster the team's hypothesis that metabolic cell activity directly controls life and death decisions in cells.
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