Health & Medicine
- Humans
EPA considers new call for toxicity testing of BPA
The Environmental Protection Agency solicited public comment, July 26, about whether to require new toxicity testing and environmental sampling of bisphenol A, an ingredient in many plastics and food-contact resins.
- Health & Medicine
Chimp brains don’t shrink
Primate studies aim to find out why humans get dementia.
- Health & Medicine
Tossing, turning, forgetting
A new study in mice finds that sleep disturbance erodes memory.
- Health & Medicine
Body & Brain
Knights’ bodily burden, go-to-sleep nerve cells, rat empathy and more in this week’s news.
- Health & Medicine
‘Wave of death’ may not be a last gasp
A minute after decapitation, a rat's severed head shows signs of life.
- Health & Medicine
Body & Brain
The brain sleeps in shifts, plus thinking better with folate, how brains feel the beat and more in this week's news.
- Health & Medicine
Something in the air may cause lung damage in troops
Unexplained breathing problems in soldiers serving in Iraq and Afghanistan come from deposits that damage tiny passages in the lungs.
- Humans
Mirror system gets an assist
Study finds two brain systems are surprisingly active when an amputee observes a task she can’t perform.
- Health & Medicine
Residents of the brain
It's a zoo in there: Scientists turn up startling diversity among neurons.
- Math
Varying efficacy of HIV drug cocktails explained
Steepness of slope in dose-response curve tips off researchers to importance of timing in virus’s life cycle.
- Humans
Young minds at risk from secondhand smoke
Children exposed to secondhand smoke at home are at least twice as likely to develop a neurobehavioral disorder as are kids in smokefree homes, a new study finds. And roughly 6 percent of U.S. children — some 4.8 million — encounter smoke at home.
- Humans
Metal water bottles may leach BPA
Consumers who switched from polycarbonate-plastic water bottles to metal ones in hopes of avoiding the risk that bisphenol A will leach into their beverages aren’t necessarily any better off, a new study finds. Some metal water bottles leach even more BPA — an estrogen-mimicking pollutant — than do ones made from the now-pariah plastic.
