If you are a man aged 55 to 74 years with low baseline blood levels of prostate specific antigen (PSA), you don't need further screening, says a new study in Cancer.   Aggressive investigation was instead associated with a large increase in cumulative incidence and potential overtreatment for men from 1993 to 1999.

Prostate cancer is the most commonly diagnosed malignancy and the third leading cause of death from cancer in men in Western countries. While a man in the United State has about a one in six chance of being diagnosed with prostate cancer during his lifetime, his risk of dying from the disease is relatively low, about one in 36.

Artificial skin, dubbed "e-skin" by the researchers, is the first such material made out of inorganic single crystalline semiconductors. 

It's a pressure-sensitive electronic material made from semiconductor nanowires and this sort of touch-sensitive artificial skin would help overcome a key challenge in robotics: adapting the amount of force needed to hold and manipulate a wide range of objects.

Strange so-called Green Pea galaxies were first discovered in 2007 by citizen scientists and it has now been shown that these extraordinary and extremely compact star cities have low amounts of complex elements after being diluted by streams of gas and strong supernova winds.

Green Pea galaxies were discovered by participants in Galaxy Zoo, which grew out of the need to provide more help to astronomers with a huge number of night sky images produced by the Sloan Digital Sky Survey.

People can learn to control the activity of some brain regions when they get feedback signals provided by functional magnetic resonance brain imaging (fMRI), according to researchers who used fMRI during training sessions with three groups of healthy participants who were asked to assess visual emotional stimuli (negative or neutral pictures).

They were interested in the signals generated by the insula, a brain region implicated in emotion regulation. While performing the test, the investigators provided the subjects with specific, unspecific, or no feedback about the extent of the activation of the insula.

An archaeological team has discovered the oldest Roman baths in Asia Minor - underneath existing Roman baths.  Location:  Sagalassos, Turkey, which was inhabited as a city until the 7th century AD, when it was destroyed by earthquakes. 

Prior to the Sagalassos discovery, the Capito Baths in Miletus, built during the reign of Emperor Claudius (41-54 AD), were the oldest known Roman bathing complex in Asia Minor.

In almost everything, size matters.  And usually, being bigger helps.   I don't know anyone who couldn't use a larger refrigerator but University of Bristol physicists have done the unthinkable and made the smallest refrigerator ever.