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Science News for April 20, 2012


Range of diagnostic spinal fluid tests needed to differentiate concurrent brain diseases

A team of researchers from the University of Pennsylvania School of Medicine has demonstrated that a range of diagnostic spinal fluid tests are needed to differentiate between brain diseases such as Alzheimer's disease and frontotemporal lobar degeneration. The studies found that biomarkers in cerebrospinal fluid, including tau and amy...

Meat eating behind humans' spreading over the globe

A study by Lund University researchers reveals that meat-eating is linked to the timing of weaning in mammals, which may have contributed to human population expansion globally. The study found that carnivorous species, including humans, have shorter breast-feeding periods than herbivores and omnivores.

SourceLund University·JournalPLOS ONE·DateApr 20, 2012

Your left side is your best side

Researchers found that images of the left side of the face are rated as more pleasant than those of the right side, possibly due to increased emotion intensity. The study also showed a strong preference for left-sided portraits in real-life photographs and confirmation from pupil size measurements.

SourceSpringer·JournalExperimental Brain Research·DateApr 20, 2012