What makes a good blood donor? A willingness to welcome anyone who enters the room, it seems, and names like Don Juan, Napoleon, Gucci, Azur, and Marissa don't hurt either.

“I chose them for their hematological characteristics, but also for their good disposition. We didn’t want cats that would be stressed when handled or that needed excessive sedation,” said Dr. Marie-Claude Blais, Professor at the University of Montreal’s Faculty of Veterinary Medicine.

Rapid eye movements, known as saccades, have been a source of a nature versus nurture debate. 

One hypothesis has been that this neurological behaviour is a product of culture in people of Chinese origin. A new study casts doubt on that. 
Scientists tested three groups – students from mainland China, British people with Chinese parents and white British people – to see how quickly their eyes reacted to dots appearing in the periphery of their vision.
These express saccades – particularly fast responses which begin a tenth of a second after a target appears - were similar in British and mainland Chinese while white British participants made far fewer.

Conventional wisdom and sociological arguments have claimed that societies with more men than women, such as China, will become more violent, but a new study has found that a male-biased sex ratio does not lead to more crime.

Rates of rape, sexual assault and homicide are actually lower in societies with more men than women, the study found, and evolutionary theories predicting that when males outnumber females, males will compete more vigorously for the limited number of mates don’t hold up either. 

“Here, we untangle the logic behind the widely held notion that in human societies where men outnumber women, there will be more violence,” said anthropology professor Monique Borgerhoff Mulder of U.C. Davis, co-author of the study.

Vapor losses to the walls of laboratory chambers haven't been properly factored in, according to a new PNAS paper, and that has caused researchers to underestimate the formation of secondary organic aerosol in the atmosphere. It also brings up a lot of questions about what other simplistic mistakes have led to all kinds of air quality claims.

Vapor losses can suppress the formation of secondary organic aerosol, which in turn has contributed to the under-prediction of secondary organic aerosol (SOA) in climate and air quality models. Secondary organic aerosols are formed primarily through chemistry that occurs in the gas phase.

The Baryon Oscillation Spectroscopic Survey  - BOSS - is the largest component of the third Sloan Digital Sky Survey (SDSS-III) and pioneered the use of quasars to map density variations in intergalactic gas at high redshifts, tracing the structure of the young universe.

BOSS charts the history of the universe's expansion and new measures of large-scale structure have yielded the most precise measurement of expansion since galaxies first formed.