If a doctor gives 100 patients who complain of pain a simple sugar pill, he can be sure that 33 of them will feel better. Pain experts have known for a long time that people who respond to placebos also get more relief from narcotics than do those who don't show the 'placebo effect'. Now research is being done to determine whether the placebo response is all in the head or whether the inert pills have physical effects after all.

the transfer of energy between two molecules spaced just nanometers apart plays a key role in many technologies, including photovoltaics, quantum information systems, lighting, and sensors, as well as in biophysics to measure nanometer distances and in photosynthesis. but an open question in this area is what effect, if any, the surrounding photonic environment has on this nanoscale energy transfer. by designing and performing a carefully controlled experiment to answer this question, scientists have settled the debate and found clues to improving the efficiency of many of the technologies that rely on this process.

explanation:

stress fractures occur largely in the feet and legs and are common in sports that require repetitive impact, primarily running/jumping sports such as gymnastics or track and field.

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