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News | Archive (21 November 2011)
Palaeontologist describes large nest of juvenile dinosaurs, first of their genus ever found
— 19:34 GMT | Geology and palaeontologyA nest containing the fossilised remains of 15 juvenile Protoceratops andrewsi dinosaurs from Mongolia has been described by a University of Rhode Island palaeontologist, revealing new information about postnatal development and parental care. It is the first nest of this genus ever found and the first indication that Protoceratops juveniles remained in the nest for an extended period…
Predators drive the evolution of poison dart frogs' skin patterns
— 19:31 GMT | BiologyNatural selection has played a role in the development of the many skins patterns of the tiny Ranitomeya imitator poison dart frog, according to a study that will be published in an upcoming edition of American Naturalist by University of Montreal biologist Mathieu Chouteau. The researcher's methodology was rather unusual: on three occasions over three days, at two different sites, Chouteau investigated the number of attacks that had been made on fake frogs, by counting how many times that had been pecked. Those that were attacked the least looked like local frogs, while those that came from another area had obviously been targeted…
Discovery of new muscle repair gene
— 19:28 GMT | HealthAn international team of researchers from Leeds, London and Berlin has discovered more about the function of muscle stem cells, thanks to next-generation DNA sequencing techniques…
Scientists invent long-lasting, near infrared-emitting material
— 19:25 GMT | TechnologyMaterials that emit visible light after being exposed to sunlight are commonplace and can be found in everything from emergency signage to glow-in-the-dark stickers. But until now, scientists have had little success creating materials that emit light in the near-infrared range, a portion of the spectrum that only can be seen with the aid of night vision devices…
A new model for understanding biodiversity
— 19:22 GMT | BiologyAnimals like foxes and raccoons are highly adaptable. They move around and eat everything from insects to eggs. They and other 'generalist feeders' like them may also be crucial to sustaining biological diversity, according to a new study published in the Proceedings of the National Academy of Sciences (PNAS)…
Critical molecules for hearing and balance discovered
— 19:19 GMT | HealthResearchers have found long-sought genes in the sensory hair cells of the inner ear that, when mutated, prevent sound waves from being converted to electric signals - a fundamental first step in hearing. The team, co-led by Jeffrey Holt, PhD, in the department of otolaryngology at Children's Hospital Boston, and Andrew Griffith, MD, PhD, of the NIH's National Institute on Deafness and other Communication Disorders (NIDCD), then restored these electrical signals in the sensory cells of deaf mice by introducing normal genes…
Mechanism of wine swirling explained
— 19:16 GMT | PhysicsWine drinkers know that swirling a good vintage around in a glass aerates the wine and releases its bouquet. Just how the process - known as 'orbital shaking' - works, however, has been something of a mystery…
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