Acupuncture is advocated by some for pain control but there are doubts about its effectiveness and its safety. Investigators from the Universities of Exeter&Plymouth (Exeter, UK) and the Korea Institute of Oriental Medicine (Daejeon, South Korea) evaluated systematic reviews of acupuncture in order to explore the issue.
Their analysis in PAIN concluded there is little convincing evidence that acupuncture is effective in reducing pain and serious adverse effects continue to be reported.
A group of patients withneurodegenerative diseases have helped researchers discover a neurological basis of embarrassment. The thumb-sized bit of tissue in the right hemisphere of the front part of the brain is called the pregenual anterior cingulate cortex and they found the link using...karaoke.
They recorded people belting out "My Girl" – the 1964 hit by The Temptations - and then asked them to listen to their own singing without the accompanying music. The degree to which the singers were embarrassed in hearing themselves sing depended on the integrity of the pregenual anterior cingulate cortex region.
You know this already - given sufficient forward speed, a bicycle pushed sideways will not fall over.
Since the bicycle was invented, scientists have postulated various reasons as to why a bicycle is self stable above a certain speed. The consensus has been that a bicycle's stability is related to two factors: First, the rotating wheels of the bicycle provide stability through gyroscopic effects; secondly, that the ‘trail’, the distance by which the contact point of the front wheel trails behind the steering axis, plays an important part.
A new study of the eyes of fossil animals in Science overturns the conventional wisdom that dinosaurs were active by day while early mammals moved at night. Instead, dinosaurs like velociraptor hunted by night while the big plant-eaters browsed around the clock.
The first large-scale picture of the electrical conductivity of the underground molten rock that feeds the Yellowstone supervolcano suggests that the plume beneath the volcanically active area, known for geysers and hot springs, is even bigger than it appeared in images made with earthquake waves.
In the past 2 million years, three eruptions at Yellowstone have spewed enough volcanic ash to cover half of North America. The new study doesn't speculate about the chances of another cataclysmic caldera eruption at Yellowstone but it gives new perspective on the deep reservoir of fiery material that feeds eruptions.
Liaoconodon hui, a complete fossil mammal from the Mesozoic, has been found in China and includes a long-sought transitional middle ear. The specimen shows the bones associated with hearing in mammals (the malleus, incus, and ectotympanic) decoupled from the lower jaw, as had been predicted, but were held in place by an ossified cartilage that rested in a groove on the lower jaw.
The paper in Nature also suggests that the middle ear evolved at least twice in mammals, for monotremes and for the marsupial-placental group.
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