Add BrightSurf on Google Email

Science News for December 31, 2009


It's never too late to quit smoking and save your vision

A UCLA study published in the American Journal of Ophthalmology found that older women who quit smoking had a significantly lower risk of developing advanced age-related macular degeneration. The research, led by Dr. Anne Coleman, followed 1,958 women over five years and showed that even after age 80, quitting smoking can reduce AMD risk.

SourceUniversity of California - Los Angeles·JournalAmerican Journal of Ophthalmology·DateDec 31, 2009

Evolution caught in the act

A US-German team studied genetic changes in Arabidopsis thaliana over 30 generations, finding that new mutations occur frequently, with an average of one per genome per generation. The study also reveals that not all parts of the genome are equally affected and provides new estimates for when species split up.

SourceMax-Planck-Gesellschaft·JournalScience·DateDec 31, 2009

Got a pet tarantula? Then wear eye protection

A 29-year-old man experienced symptoms after a tarantula released 'a mist of hairs' into the air, which got stuck in his eyes. He was treated with topical steroids and made a full recovery. The case highlights the importance of proper eye protection when handling tarantulas.

SourceThe Lancet_DELETED·JournalThe Lancet·DateDec 31, 2009

Using modern sequencing techniques to study ancient modern humans

Researchers overcome DNA contamination hurdle to analyze 30,000-year-old human DNA using modern sequencing techniques, providing insights into the evolution and prehistory of our species. The study allows scientists to directly glimpse into the genetic makeup of ancient humans who lived tens of thousands of years ago.

SourceCell Press·JournalCurrent Biology·DateDec 31, 2009

Catheter ablation prior to defibrillator shock reduces risk of recurrence of life threatening rapid heartbeat in patients with stable ventricular tachycardia (VTACH study)

A randomized controlled trial shows that catheter ablation before ICD implantation reduces VT recurrence at two years, with a 40% lower risk of repeat VT or VF. Prophylactic catheter ablation may be considered for patients with stable VT and reduced left-ventricular function.

SourceThe Lancet_DELETED·JournalThe Lancet·DateDec 31, 2009