ScienceDaily: Most Popular News

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• Physicists teleport quantum state of photon to crystal over 25 kilometers
• Simple test can help detect Alzheimer's before dementia signs show, study shows
• Graphene sensor tracks down cancer biomarkers
• Superabsorbing ring could make light work of snaps, be ultimate camera pixel
• Sibling bullying linked to later depression, self-harm
• Latest measurements from the AMS experiment unveil new territories in the flux of cosmic rays
• Monster galaxies gain weight by eating smaller neighbors

Physicists teleport quantum state of photon to crystal over 25 kilometers Posted: 21 Sep 2014 11:50 AM PDT Physicists have succeeded in teleporting the quantum state of a photon to a crystal over 25 kilometers of optical fiber. The experiment constitutes a first, and simply pulverizes the previous record of 6 kilometers achieved ten years ago by the same team. Passing from light into matter, using teleportation of a photon to a crystal, shows that, in quantum physics, it is not the composition of a particle which is important, but rather its state, since this can exist and persist outside such extreme differences as those which distinguish light from matter.

Simple test can help detect Alzheimer's before dementia signs show, study shows Posted: 19 Sep 2014 08:06 AM PDT A simple test that combines thinking and movement can help to detect heightened risk for developing Alzheimer's disease in a person, even before there are any telltale behavioural signs of dementia, researchers report, adding that the findings don't predict who will develop Alzheimer's disease, but they do show there is something different in the brains of those who go on to be diagnosed with Alzheimer's.

Graphene sensor tracks down cancer biomarkers Posted: 19 Sep 2014 08:06 AM PDT An ultrasensitive biosensor made from the wonder material graphene has been used to detect molecules that indicate an increased risk of developing cancer. The biosensor has been shown to be more than five times more sensitive than bioassay tests currently in use, and was able to provide results in a matter of minutes, opening up the possibility of a rapid, point-of-care diagnostic tool for patients.

Superabsorbing ring could make light work of snaps, be ultimate camera pixel Posted: 19 Sep 2014 07:08 AM PDT A quantum effect in which excited atoms team up to emit an enhanced pulse of light can be turned on its head to create 'superabsorbing' systems that could make the 'ultimate camera pixel'.

Sibling bullying linked to later depression, self-harm Posted: 19 Sep 2014 07:02 AM PDT A new study has found that children who revealed they had been bullied by their brothers or sisters several times a week or more during early adolescence were twice as likely to report being clinically depressed as young adults.

Latest measurements from the AMS experiment unveil new territories in the flux of cosmic rays Posted: 19 Sep 2014 05:38 AM PDT The Alpha Magnetic Spectrometer collaboration has just presented its latest results. These are based on the analysis of 41 billion particles detected with the space-based AMS detector aboard the International Space Station. The results provide new insights into the nature of the mysterious excess of positrons observed in the flux of cosmic rays.

Monster galaxies gain weight by eating smaller neighbors Posted: 19 Sep 2014 05:38 AM PDT Massive galaxies in the universe have stopped making their own stars and are instead snacking on nearby galaxies. Astronomers looked at more than 22,000 galaxies and found that while smaller galaxies are very efficient at creating stars from gas, the most massive galaxies are much less efficient at star formation, producing hardly any new stars themselves, and instead grow by 'eating' other galaxies.

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