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  • Science Ticker

    Low levels of lead linked to lower test scores in children

    Small doses of lead may have big impacts on reading and math scores, scientists report April 7 in Environmental Health.

    Researchers looked at third grade test scores and levels of lead in blood samples from 58,650 students in Chicago public schools. As little as 2...

    04/17/2015 - 12:00 Toxicology
  • Science Ticker

    Saying ‘I’ and ‘me’ all the time doesn’t make you a narcissist

    Narcissism is not in the I’s of the beholder — or the speaker. People who utter lots of first-person singular pronouns such as I and me score no higher on narcissism questionnaires than peers who engage in little I-talk, researchers report March 30 in the Journal of Personality and Social Psychology...

    04/10/2015 - 16:15 Psychology
  • Scicurious

    Serotonin and the science of sex

    In 2011, a group of scientists “turned mice gay.” The only issue is, of course, they didn’t.

    Rather, Yi Rao and colleagues at Peking University in Beijing, China, showed that male mice will cheerfully mount both male and female mice, as long as their brains are deficient in one chemical...

    04/10/2015 - 08:00 Neuroscience
  • Scicurious

    Women in engineering engage best with gender parity

    Even when a woman is confident in her abilities, it can be a chilling experience to be the only woman in the room. Suddenly her voice sounds higher in her ears. She begins to worry she’ll be talked over. And in male-dominated careers, it might end up meaning a woman never speaks up in the first place.

    In some situations, it really does help to have other women around. A new study finds...

    04/06/2015 - 17:16 Science & Society
  • Letters to the Editor

    Rethinking light's speed, helping young adults with autism and more reader feedback

    A failure to replicate

    Tina Hesman Saey’s two-part series, “Repeat Performance” (SN: 1/24/15, p. 20...

    03/25/2015 - 11:00 Psychology, Physics, Science & Society
  • Feature

    Telling stories from stone tools

    View the slideshowView the video

    Imagine if tens of thousands of years from now, archaeologists were to dig up a pile of wrecked, 20th century cars and try to figure out what people did with the strange-looking things.

    After measuring soil-encrusted automobile shells and scattered engine innards, the researchers might well announce...

    03/23/2015 - 13:51 Archaeology, Anthropology
  • Context

    P value ban: small step for a journal, giant leap for science

    Imagine, if you dare, a world without P values.

    Perhaps you’re already among the lucky participants in the human race who don’t know what a P value is. Trust me, you don’t want to. P stands for pernicious, and P values are at the root of all (well, most) scientific evil.

    Of course, I don’t mean evil in the sense of James Bond’s villains. It’s an unintentional evil, but nevertheless...

    03/17/2015 - 15:18 Numbers
  • News in Brief

    Super-Earths may form in two ways

    Super-Earths, rocky planets that are several times as massive as Earth, form in two different ways, a new study suggests.

    Stars with super-Earths huddled up close are enriched in heavy elements such as iron, while stars where the super-Earths keep their distance are slightly deficient in those elements. Since planets form from the same reservoir of gas and dust as their stars,...

    03/13/2015 - 12:12 Exoplanets
  • News in Brief

    Teens have higher anaphylaxis risk than younger kids

    HOUSTON — Although adolescents are better at taking care of themselves than young children, high school kids are more apt to experience an extreme allergic reaction. Data from 6,001 U.S. schools show that 724 of their students required treatment with an epinephrine injection during the 2013–14 school year. Nearly half of those kids were in high school, researchers...

    03/11/2015 - 08:00 Health
  • Context

    Life’s origin might illustrate the power of game theory

    At first glance, it seems strange to think that math used for describing business competition, fighting terrorists and playing poker would also have anything to do with the origin of life. But you never know.

    Game theory — the branch of math used for describing strategic interactions — was conceived as a mathematical exercise to explain parlor games. Originally the idea was to analyze...

    03/09/2015 - 16:25 Evolution, Numbers