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Article ID: 703940

X-Rays Show How Periods of Stress Changed an Ice Age Hyena to the Bone

SLAC National Accelerator Laboratory

An international team has unearthed what life might have been like for a now-extinct subspecies of spotted hyena. They found that despite their massive size, some cave hyenas experienced times of hardship that affected them to the bone, causing areas of arrested growth that appear as dark lines, like rings on a tree trunk.

Released:
13-Nov-2018 4:05 PM EST
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Article ID: 703234

Tulane archaeologist coauthors first details on remains of 450-year-old Spanish fort

Tulane University

Chris Rodning, the Paul and Debra Gibbons Professor in the Tulane University School of Liberal Arts’ Department of Anthropology, has co-authored a major paper on the archaeology of a Spanish colonial fort built in 1566 at the Berry site, a large Native American town in present-day North Carolina.

Released:
1-Nov-2018 2:05 PM EDT
  • Embargo expired:
    31-Oct-2018 2:00 PM EDT

Article ID: 702578

Researchers Discover Earliest Recorded Lead Exposure in 250,000 Year-Old Neanderthal Teeth

Mount Sinai Health System

Using evidence found in teeth from two Neanderthals from southeastern France, researchers from the Department of Environmental Medicine and Public Health at the Icahn School of Medicine at Mount Sinai report the earliest evidence of lead exposure in an extinct human-like species from 250,000 years ago.

Released:
23-Oct-2018 12:05 PM EDT
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Article ID: 702554

Extinct Tuskless Walrus Fossil Discovered in Orange County

California State University, Fullerton

Cal State Fullerton (CSUF) paleontologists have described a new genus and species of walrus and named it after CSUF Titans and Orange County, where the extinct, tuskless fossil was discovered.

Released:
22-Oct-2018 10:30 AM EDT
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Article ID: 700427

Tulane Archaeologist Leads Team to Major Maya Find

Tulane University

A team of archaeologists has discovered a nearly 1,500-year old carved altar in the jungles of northern Guatemala.

Released:
12-Sep-2018 2:05 PM EDT

Arts and Humanities

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  • Embargo expired:
    12-Sep-2018 2:00 PM EDT

Article ID: 700389

Human Activity In Madagascar Dates Back 6,000 Years Earlier Than Thought, According To Study Led By Stony Brook University Researcher Pat Wright

Stony Brook University

Humans arrived on the tropical island of Madagascar more than 6,000 years earlier than previously thought based on an analysis of bones from what was once the world’s largest bird, according to a study led by Stony Brook University researcher Dr. Pat Wright and published today in the journal Science Advances.

Released:
12-Sep-2018 10:00 AM EDT

Article ID: 699420

Want to know what ancient koalas ate? First, check modern koalas' teeth

Vanderbilt University

Larisa DeSantis' latest research confirms the shape of tooth wear best indicates the kind of food koalas and kangaroos ate, not whether it was covered in dust and dirt.

Released:
22-Aug-2018 4:05 PM EDT
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Article ID: 699226

Laughing Gas May Have Helped Warm Early Earth and Given Breath to Life

Georgia Institute of Technology

Laughing gas and the mystery of Carl Sagan's Faint Young Sun Paradox: When the sun shone dimmer an eon ago, Earth remained warm in spite of it likely thanks to a mix of greenhouse gases. Biogeochemists have now shown how N20, known today for its use as a dental anesthetic, may have made it into the mix.

Released:
20-Aug-2018 2:05 PM EDT
  • Embargo expired:
    22-Jul-2018 8:00 AM EDT

Article ID: 697398

X-ray Diffraction Method Used to Examine Collagen in the Brain, Heart, and T. rex Fossils

American Crystallographic Association (ACA)

A laboratory at the Illinois Institute of Technology is using fiber diffraction to examine tissue structures in the human brain and heart, as well as in T. rex fossils. Few researchers use this type of X-ray diffraction because of the time and labor required to complete experiments, the researchers have resolved images of the fine threads of collagen fibrils in connective, neurological and dinosaur tissues to one-billionth of a meter. During the 68th Annual Meeting of the American Crystallographic Association, they will explain their work.

Released:
13-Jul-2018 9:00 AM EDT
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  • Embargo expired:
    19-Jul-2018 12:30 PM EDT

Article ID: 697578

Newly Discovered Armored Dinosaur From Utah Reveals Intriguing Family History

University of Utah

Fossils of a new genus and species of an ankylosaurid dinosaur—Akainacephalus johnsoni-- have been unearthed in Grand Staircase-Escalante National Monument in southern Utah, U.S.A., and are revealing new details about the diversity and evolution of this group of armored dinosaurs.

Released:
17-Jul-2018 12:30 PM EDT

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