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New Technologies Challenge Old Ideas About Early Hominid Diets

By Guest PostOctober 15, 2011Sciencec3 photosynthetic pathway, chimpanzees, early hominids, gorillas, hominid teeth, long-held assumptions, national science foundation, nutcracker man, paranthropus boisei, sponheimer, unger, university of arkansas, university of colorado at boulder

New assessments by researchers using the latest high-tech tools to study the diets of early hominids are challenging long-held assumptions about what our ancestors ate, says a study by the University of Colorado Boulder and the University of Arkansas.

By analyzing microscopic pits and scratches on hominid teeth, as well as stable isotopes of carbon found in teeth, researchers are getting a very different picture of the diet habitats of early hominids than that painted by the physical structure of the skull, jawbones and teeth. While some early hominids sported powerful jaws and large molars — including Paranthropus boisei, dubbed “Nutcracker Man” — they may have cracked nuts rarely if at all, said CU-Boulder anthropology Professor Matt Sponheimer, study co-author. (more…)

Men With Macho Faces Attractive to Fertile Women, Researchers Find

By Guest PostJanuary 8, 2011Cultureestrus, fertile women, george Clooney, heterosexual couples, human sexual selection, macho visage, masculine-looking, mid-cycle, randy thornhill, steven gangestad, testosterone, university of colorado at boulder, university of new mexico

When their romantic partners are not quintessentially masculine, women in their fertile phase are more likely to fantasize about masculine-looking men than are women paired with George Clooney types.

But women with masculine-looking partners do not necessarily become more attracted to their partners, a recent study co-authored by a University of Colorado at Boulder researcher concludes. (more…)

Stem Cell Transplants in Mice Produce Lifelong Enhancement of Muscle Mass

By Guest PostNovember 13, 20102 commentsScienceaging, bradley olwin, cell transplant, chronic, degenerative muscle diseases, green fluorescent protein, leg muscles, mice, muscle function, muscle stem cells, myofibers, satellite cells, stem cells, transplant, ultraviolet light, university of colorado at boulder

A University of Colorado at Boulder-led study shows that specific types of stem cells transplanted into the leg muscles of mice prevented the loss of muscle function and mass that normally occurs with aging, a finding with potential uses in treating humans with chronic, degenerative muscle diseases.

The experiments showed that when young host mice with limb muscle injuries were injected with muscle stem cells from young donor mice, the cells not only repaired the injury within days, they caused the treated muscle to double in mass and sustain itself through the lifetime of the transplanted mice. “This was a very exciting and unexpected result,” said Professor Bradley Olwin of CU-Boulder’s molecular, cellular and developmental biology department, the study’s corresponding author. (more…)

CU-Boulder-Led Hubble Astronomy Team Uncovers Evidence of Early Heated Universe

By Guest PostOctober 8, 2010Scienceastrophysical and planetary sciences, big bang, black hole, black holes, charles danforth, cos, cosmic origins spectrograph, dwarf galaxies, galaxies, global warming, hubble, Hubble Space Telescope, kevin france, michael shull, NASA, quasar beacon, radiation, remote universe, small galaxies, universal warming, universe, university of colorado at boulder

If you think global warming is bad, 11 billion years ago the entire universe underwent what might be called universal warming. The consequence of that early heating was that fierce blasts of radiation from voracious black holes stunted the growth of some small galaxies for a stretch of 500 million years. (more…)

Parting The Waters: Computer Modeling Applies Physics to Red Sea Escape Route

By Guest PostSeptember 22, 2010Sciencealexei androsov, animation, Bible, biblical account, biblical account of the red sea parting, carl drews, coastal lagoon, computer modeling, cu, divine miracle, exodus, fluid dynamics, mediterranean sea, miracles, moses, mud flats, nathan paldor, national center for atmospheric research, naum voltzinger, ncar, nile delta, parting of the red sea, pharaoh, suez canal, tsunami, university of colorado at boulder, waters, wind setdown

The biblical account of the parting of the Red Sea has inspired and mystified people for millennia. A new computer modeling study by researchers at the National Center for Atmospheric Research (NCAR) and the University of Colorado at Boulder (CU) shows how the movement of wind as described in the book of Exodus could have parted the waters.

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Arctic Sea Ice Reaches Lowest 2010 Extent, Third Lowest in Satellite Record

By Guest PostSeptember 17, 2010Environmentarctic sea, atmosphere, earth, greenhouse gases, ice, NASA, natural climate, satellites, serreze, shrinking arctic sea ice, snow and ice data center, university of colorado at boulder

The Arctic sea ice cover appears to have reached its minimum extent for the year, the third-lowest recorded since satellites began measuring sea ice extent in 1979, according to the University of Colorado at Boulder’s National Snow and Ice Data Center.

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Study of Death Penalty in North Carolina Shows That ‘Race Matters’

By Guest PostJuly 26, 20101 commentGeneral, Politicsboston, death sentences, fbi, glenn pierce, law review, michael radelet, north Carolina, northeastern university, professor, race matters, racial justice act, school of criminology and criminal justice, sociology, supplemental homicide reports, university of colorado at boulder, us supreme court

A new study examining death sentences in North Carolina over a 28-year period ending in 2007 shows that among similar homicides, the odds of a death sentence for those who are suspected of killing whites are approximately three times higher than the odds of a death sentence for those suspected of killing blacks.

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‘Sea Levels Rising in Parts of Indian Ocean’

By Guest PostJuly 15, 20102 commentsEnvironmentafrica, Antarctica, arabian sea, atmospheric, balaji rajagopalan, Bangladesh, bay of bengal, global climate, greenhouse gases, India, indian ocean, indo-pacific, Java, mascarenhas archipelago, naval research laboratory in Mississippi, ncar, sea levels, seychelles Islands, sri lanka, sumatra, Tanzania, university of colorado at boulder, weiqing han, Zanzibar

*Greenhouse gases are playing a role in changes, say scientists*

Newly detected rising sea levels in parts of the Indian Ocean, including the coastlines of the Bay of Bengal, the Arabian Sea, Sri Lanka, Sumatra and Java, appear to be at least partly a result of human-induced increases of atmospheric greenhouse gases, says a study led by the University of Colorado at Boulder.

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