Herd mentality. Angry mob. Mass hysteria. As these phrases suggest, we are not always confident that a large group of people will come up with the smartest decisions.

But numerous studies have shown that a crowd of people usually gives more accurate responses to questions compared to an individual and averaging the responses provided from a group increases accuracy by canceling out a number of errors made across the board, like over- and under-estimating the answer.

A new study from North Carolina State University shows that painted road markings, such as the lines separating traffic lanes, are significantly better at reflecting headlights in the direction that the paint was applied. This finding will help determine how states comply with new federal safety regulations and save money on painting their roadways.

What's in a name? Perhaps more (or less) money.  Before employers have a chance to judge job applicants on their merits, they may have already judged them on the sound of their names, says  a study published in the latest issue of the Journal of Labor Economics.  

Who hasn't tried to bleach their hair with hydrogen peroxide  in college?    I can't tell you how many young scientists we know who tried to go for that young Reed Richards look.

It turns out that hydrogen peroxide may be responsbile for bleached hair in aging also, though not intentionally.   

Researchers of the Johannes Gutenberg University Mainz in Germany nd the University of Bradford  say they have now unlocked the secret of hair turning white or gray in old age. According to them, free oxygen radicals are significantly involved in the loss of hair color.

Sulfuryl fluoride, a gas used for fumigation, has the potential to contribute significantly to future greenhouse warming, but because its production has not yet reached high levels there is still time to nip this potential contributor in the bud, according to an international team of researchers.

Their study of  sulfuryl fluoride this month in the Journal of Geophysical Research, measured the levels of the gas in the atmosphere and determined its emissions and lifetime to help gauge its potential future effects on climate.

If you want to perform at your peak, you should carefully consider how you discuss your past actions. In a new study in Psychological Science, psychologists William Hart of the University of Florida and Dolores AlbarracÃn from the University of Illinois at Urbana-Champaign reveal that the way a statement is phrased (and specifically, how the verbs are used), affects our memory of an event being described and may also influence our behavior.