Paleontologists Mark Goodwin and Jack Horner have dug for 11 years in Montana’s Hell Creek Formation in search of every dinosaur fossil they can find, accumulating specimens of all stages of development. Their new report on the growth stages of dome-headed dinosaurs shows that two named species are really just young pachycephalosaurs. They say that [...]
Continue reading about New Analyses Of Dinosaur Growth May Wipe Out One-third Of Species
The race of kidney donors may affect the survival rates of transplant recipients, according to a new study.
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Scientists report a major step forward in the development of an effective therapy against two deadly viruses, Nipah virus and the related Hendra virus.
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High-definition colonoscopy is much more sensitive than standard colonoscopy in finding polyps that could morph into cancer, say researchers.
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DNA samples often convict criminals. But many of today’s forensic tests are so polluted by soil, tobacco and food remains, for example, that they can not be used. Now researchers in Sweden have improved a critical part of the analysis process. The first findings indicate that the new method strengthens the DNA analysis so that [...]
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Stress-evoked changes in circuits that regulate serotonin in certain parts of the brain can precipitate a low mood and a relapse of cocaine-seeking, based on mouse studies.
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Scientists report that regeneration of central nervous system axons can be achieved in rats even when treatment delayed is more than a year after the original spinal cord injury.
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Scientists have completed a phase II clinical study that indicates a vaccine to prevent Group B Streptococcus infection is possible.
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For decades, climate scientists have worked to identify and measure key substances — notably greenhouse gases and aerosol particles — that affect Earth’s climate. And they’ve been aided by ever more sophisticated computer models that make estimating the relative impact of each type of pollutant more reliable. Yet the complexity of nature — and the [...]
Continue reading about Interactions With Aerosols Boost Warming Potential Of Some Gases
Trophoblast stem cells, found in the layer of peripheral embryonic stem cells from which the placenta is formed, are thought to exhibit “immune privilege” that aids cell survivability and is potentially beneficial for cell and gene therapies. Survivability of TSCs has been thought to require the presence of ovarian hormones. This study, however, demonstrates that [...]