Suicidal doctors have excellent access to health care but appear to be under-treated for mental health problems, according to a new University of Michigan analysis.  

More physicians than non-physicians in their analysis had known mental health problems prior to suicide but that didn't translate into a higher rate of antidepressant use. Major depression is a known risk factor for suicide, particularly for female physicians.

Stigma, lack of confidentiality, and desire to self-treat may explain why physicians don't seek formal treatment for mental health problems, says lead author Katherine J. Gold, M.D., M.S.W., M.S., assistant professor of family medicine and of obstetrics and gynecology at the University of Michigan Medical School.

In the wake of Italian scientists being sentenced for not having sufficiently warned the public about the risks of a severe earthquake of L'Aquila 2009, the German National Academy of Sciences Leopoldina and the French Académie des sciences have published a statement trying to head off possible situations in their own countries Their statement concerning the handling of risks situations by scientists is below.

Genetic blending between Europeans and Asians occurred over 2,000 years ago in the Altai region of Mongolia, according to a new analysis.  The remains of ancient Scythian warriors indicate that this blending was not due to an eastward migration of Europeans, but to a demographic expansion of local Central Asian populations and that was due to the technological improvements the Scythian culture brought with them. 

The Scythians were an Indo-European people dedicated to nomadic pasturing and horse breeding. They crossed the Eurasian steppes from the Caspian Sea until reaching the Altai Mountains during the 2nd and 7th century BCE. We know about them primarily due to ancient texts written by the Greek historian Herodotus.

A device capable of amplifying the information in a single particle of light without adding noise has been created.  The researchers were able to amplify the noisy quantum state of a single photon subjected to loss, without adding noise in the process - their amplification actually reduced the noise in the quantum state. 

It is expected the results will stimulate further interest in the fundamental laws that govern how well amplifiers can work and in developing uses of noiseless amplification techniques for other quantum information technology applications.

Microbiologists and geochemists have shown that marine methane oxidation coupled to sulfate respiration can be performed by a single microorganism, a member of the ancient kingdom of the Archaea, and doesn't need to be carried out in collaboration with a bacterium, as previously thought.

One big knock on solar energy is that it is inconsistent; it doesn't work at night or on cloudy days and storing it in batteries takes away the cost effectiveness. But a new technology is in development that can transform that light energy into a storable clean fuel that still has a neutral carbon footprint - hydrogen.

What does it take? Water and iron oxide, better known as rust. Kevin Sivula and colleagues at Ecole Polytechnique Fédérale de Lausanne intentionally stuck to inexpensive materials and easily scalable production processes in order work toward an economically viable method for solar hydrogen production.