The idea that far distant particles can somehow 'talk' to each other led Einstein to call it 'spooky action at a distance'.
Having confirmed its existence, scientists today are learning how to use this 'spooky action' as a helpful tool. Now a team of physicists at the University of Bristol and Imperial College London have harnessed this phenomenon to shed light on another unusual and previously difficult aspect of quantum physics - that of distinguishing between two similar quantum devices.
In the everyday world any process can be considered as a black box device with an input and an output; if you wish to identify the device you simply apply inputs, measure the outputs and determine what must have happened in between.
Autism is a complex brain disorder that impairs social, communications and behavioral development. It is often characterized by extreme behavior. A new study by University of Utah School of Medicine researchers and conducted with Utah children says kids who are firstborn or breech or whose mothers are 35 or older when giving birth are at significantly greater risk for developing an autism spectrum disorder.
Firstborn? Those are 50% of all kids in America.
In the April 27, 2009,issue of Pediatrics, the researchers say that:
Women who give birth at 35 or older are 1.7 times more likely to have a child with an autism spectrum disorder (ASD), compared with women between the ages of 20-34;
Scientists of Helmholtz Zentrum München, led by Professor Martin Hrabé de Angelis, director of the Institute of Experimental Genetics, have developed a new mouse model with a genetic mutant in which a single base of a specific microRNA seed region has been altered. Mice carrying this miR-96 mutation suffer progressive hearing loss as they get older. Moreover, if they carry two of these mutants, their sensory hair cells are impaired from birth on.
Most people are expert readers, but it is something of an enigma how our brain achieved expertise in such a recent cultural invention which requires a cognitive interface between vision and language.
The first alphabetic scripts are thought to have been invented only around four to five thousand years ago so it is unlikely that enough time has elapsed to allow the evolution of specialized parts of the brain for reading.
While neuroimaging techniques have made some progress in understanding the neural underpinning of this essentially cultural skill, the exact unfolding of brain activity has remained elusive.
The theory that the Chicxulub crater holds the clue to the demise of the dinosaurs and 40 percent of all species 65 million years ago
is challenged in a paper published in the Journal of the Geological Society
. The Chicxulub crater, discovered in 1978 in northern Yucutan and measuring about 112 miles in diameter, lies under a km of debris and records a massive extra-terrestrial impact by an object 10-20 km in size.
On April 21, 2009, CDC reported that two recent cases of febrile respiratory illness in children in southern California had been caused by infection with genetically similar swine influenza A (H1N1) viruses. The swine flu viruses contained a unique combination of gene segments that had not been reported previously among swine or human influenza viruses in the United States or elsewhere (1).
Neither child had known contact with pigs, resulting in concern that human-to-human transmission might have occurred.