A month after his return from Afganistan, Tony had disturbing memories of his combat experience as a soldier. He continues to have nightmares, flashbacks and is bothered by bright lights and loud noises. It is likely that Tony is suffering from

A) posttraumatic stress disorder
B) schizophrenia
C) generalized anxiety behaviour
D) panic disorder

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.

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