"Words can be powerful," a phrase often heard when words are hurtful or convey a misunderstood meaning. A transcultural study shows that language is indeed powerful. And is not virtually, but truly, an evolutionary force.
Addiction is a complex phenomenon. Genetic, physiological, cultural and socioeconomic factors all appear to play a role. Now, new research in rats shows that heroin addiction activates brain circuits associated with negative emotional learning, which in turn creates persistent unpleasant emotions that a user suppresses with yet more opioids.
Gender equality does not exist in professions requiring foundations in science and math, as women make up less than one-fifth of college graduates holding either engineering and computer science degrees. A new study suggests that a major cause for this gender gap is linked to how boys and girls are exposed to elementary school math, and that there's an apparent, built-in institutional bias against girls.