Tech

Like playing a game of scissors-paper-rock, a team of scientists led by Thornton E. (Ernie) Glover of Lawrence Berkeley National Laboratory's Advanced Light Source (ALS), Linda Young of Argonne National Laboratory, and Ali Belkacem of Berkeley Lab's Chemical Sciences Division has used laser light to control x-ray beams – by first changing the material medium through which the x-rays pass.

As a new generation of powerful light sources comes online, intense x-ray beams may be able to control matter directly and allow one beam of x-rays to control another.

Decision making within families is an important way for young people to gain independence and responsibility, and adolescence is a time of increasing autonomy. A longitudinal study by Penn State researchers in the College of Health and Human Development concludes that teens have more say in certain areas than in others, and that some teens have more autonomy than others.

A new study carried out by Prof. Rachel Lev-Wiesel and Dr. Tzachi Ben Zion has found that women who were victims of sexual abuse in childhood reported higher levels of depression and symptoms of post-trauma during pregnancy.

SAN FRANCISCO, March 24, 2010 — That bracing morning shower and soothing bedtime soak in the tub are potentially important but until now unrecognized sources of the hormones, antibiotics, and other pharmaceuticals that pollute the environment, scientists reported here today at the 239th National Meeting of the American Chemical Society. The first-ever evaluation, they said, could lead to new ways to control environmental pollution from active pharmaceutical ingredients (APIs), which has been the source of growing concern.

Young adults, a generally healthy population, are increasingly flocking to emergency departments (EDs) instead of outpatient clinics for medical treatment. Young adults remain the most likely age group to lack health insurance and often lose their insurance during this pivotal transition period between adolescence and adulthood.

Boston, Mass. – In a large six-year review of emergency department (ED) data, researchers at Children's Hospital Boston, in collaboration with Massachusetts General Hospital, found that many children with severe food-related allergic reactions need a second dose of epinephrine, suggesting that patients carrying EpiPens should carry two doses instead of one.

Researchers at the National Institute on Aging (NIA), part of the National Institutes of Health, have discovered a key to embryonic stem (ES) cell rejuvenation in a gene—Zscan4—as reported in the March 24, 2010, online issue of Nature. This breakthrough finding could have major implications for aging research, stem cell biology, regenerative medicine and cancer biology.