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145 to 156 of 1,052 stories (141 over past year)
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Extinct Insect Completely Reconstructed in 3-D
January 7, 2011 — Entomologists have now "resurrected" the fossil insect Mengea tertiara. Using high resolution micro-computer tomography the anatomy of an extinct insect was completely reconstructed ... > full story -
Widespread, Persistent Oxygen-Poor Conditions in Earth's Ancient Oceans Impacted Early Evolution of Animals
January 6, 2011 — Researchers report that the transition from a generally oxygen-rich ocean during the Cambrian to the fully oxygenated ocean we have today was not a simple turn of the switch, as has been widely ... > full story -
Not So Bird-Brained: 3D X-Rays Piece Together the Evolution of Flight from Fossils
January 3, 2011 — Three-dimensional X-ray scanning equipment is being used to help chart the evolution of flight in birds, by digitally reconstructing the size of bird brains using ancient fossils and modern bird ... > full story -
Fossil Finger Bone Yields Genome of a Previously Unknown Human Relative
December 22, 2010 — A 30,000-year-old finger bone found in a cave in southern Siberia came from a young girl who belonged to a previously unknown group of human relatives who may have lived throughout much of Asia. ... > full story -
Africa Has Two Elephant Species, Genetic Analysis Confirms
December 22, 2010 — By comparing the DNA of modern elephants from Africa and Asia to DNA extracted from two extinct species, the woolly mammoth and the mastodon, researchers have concluded that Africa has two -- not one ... > full story -
Genetic Basis of Brain Diseases: Set of Proteins Account for Over 130 Brain Diseases
December 20, 2010 — Scientists have isolated a set of proteins that accounts for over 130 brain diseases, including diseases such as Alzheimer's disease, Parkinson's disease, epilepsies and forms of autism and learning ... > full story -
Three Billion-Year-Old Genomic Fossils Deciphered
December 20, 2010 — Scientists traced thousands of genes from modern genomes back to those genes' first appearance on Earth to create a genomic fossil telling when genes came into being and which ancient microbes ... > full story -
Rise in Oxygen Drove Evolution of Animal Life 550 Million Years Ago
December 18, 2010 — Researchers have uncovered a clue that may help to explain why the earliest evidence of complex multicellular animal life appears around 550 million years ago, when atmospheric oxygen levels on the ... > full story -
Molecular Fossil: Crystal Structure Shows How RNA, One of Biology's Oldest Catalysts, Is Made
December 17, 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 -
Age Doesn't Matter: New Genes Are as Essential as Ancient Ones
December 16, 2010 — New genes that have evolved in species as little as one million years ago -- a virtual blink in evolutionary history -- can be just as essential for life as ancient genes, startling new research has ... > full story -
Lost Civilization Under Persian Gulf?
December 8, 2010 — A once fertile landmass now submerged beneath the Persian Gulf may have been home to some of the earliest human populations outside Africa, according to a new ... > full story -
Heat Helped Hasten Life's Beginnings on Earth, Research Suggests
December 5, 2010 — New research investigating the effect of temperature on extremely slow chemical reactions suggests that the time required for evolution on a warm earth is shorter than critics might ... > full story
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