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349 to 360 of 2,131 stories (297 over past year)
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Spice of Life: Variety Is Also Good for Hares
November 22, 2010 — Since 1871, when Charles Darwin wrote The Descent of Man, it has been widely accepted that "Variability is the necessary basis for the action of selection." Variability is associated with the ability ... > full story -
Paleovirology Expanded: Non-Retroviral Virus Fragments Found in Animal Genomes
November 18, 2010 — Understanding the evolution of life-threatening viruses like influenza, Ebola and dengue fever, could help us to minimize their impact. New research points the way to a fossil record of viruses that ... > full story -
In Fending Off Diseases, Plants and Animals Are Much the Same, Research Shows
November 18, 2010 — Contrary to long-held beliefs, plants and animals have developed remarkably similar mechanisms for detecting microbial invasions. This holds promise for the future treatment of infectious diseases in ... > full story -
Link Between Ancient Lizard Fossil in Africa and Today's Komodo Dragon in Indonesia
November 18, 2010 — Researchers have unearthed a mysterious link between bones of an ancient lizard found in Africa and the biggest, baddest modern-day lizard of them all, the Komodo dragon, half a world away in ... > full story -
Gangster Birds Running Protection Racket Give Insight Into Coevolution
November 18, 2010 — Like gangsters running a protection racket, drongos in the Kalahari Desert act as lookouts for other birds in order to steal a cut of their food catch. The behavior may represent a rare example of ... > full story -
Upending Conventional Wisdom, Certain Virus Families Are Ancient
November 16, 2010 — Certain families of single-stranded DNA virus are more than 40 to 50 million years old, according to new research. The investigators found remnants of circoviruses and parvoviruses in the genomes of ... > full story -
Synchrotron Reveals Human Children Outpaced Neanderthals by Slowing Down
November 15, 2010 — Human childhood is considerably longer than chimpanzees, our closest-living ape relatives. A multinational team of specialists, applied cutting-edge synchrotron X-ray imaging to resolve microscopic ... > full story -
Modern Humans Mature More Slowly Than Neanderthals Did, Analysis of Teeth Suggests
November 15, 2010 — A sophisticated new examination of teeth from 11 Neanderthal and early human fossils shows that modern humans are slower than our ancestors to reach full maturity. The finding suggests that our ... > full story -
New Research Changes Understanding of C4 Plant Evolution
November 15, 2010 — A new analysis of fossilized grass-pollen grains deposited on ancient European lake and sea bottoms 16-35 million years ago reveals that C4 grasses evolved earlier than previously thought. This new ... > full story -
Molecular Fossil: Crystal Structure Shows How RNA, One of Biology's Oldest Catalysts, Is Made
November 14, 2010 — In today's world of sophisticated organisms proteins are the stars. But long, long ago ribonucleic acid (RNA) reigned supreme. Now researchers have produced an atomic picture that shows how two of ... > full story -
Oldest Dinosaur Embryos Give Insights Into Infancy and Growth
November 11, 2010 — After sitting in collections for nearly 30 years, some remarkably well-preserved dinosaur eggs and their contents are offering new insights into the infancy and growth of early dinosaurs. They ... > full story -
New Explanation for the Origin of High Species Diversity in Amazon
November 11, 2010 — An international team of scientists has reset the agenda for future research in the highly diverse Amazon region by showing that the extraordinary diversity found there is much older than generally ... > full story
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