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Arctic river deltas may hold clues to future global climate

AUSTIN, Texas?Scientists struggling to understand how Earth's climate will change in the next few decades have neglected a potential treasure trove of information?sediments deposited in the ocean by major Arctic rivers such as the Colville and Mackenzie rivers?according to geoscientists at The University of Texas at Austin and Texas A&M University.

The evolutionary foundation of genomic imprinting in lower vertebrates

A Chinese scientist group working in College of Life Science, Zhejiang University, has shown that, as mammalian Igf2 CpG island, goldfish Igf2 CpG island has a parental differentially methylated region (DMR).

Preschoolers' language development is partly tied to their classmates' language skills

Young children learn how to speak and understand language from the words parents speak at home and teachers speak in preschool. A new longitudinal study has found that their preschool classmates also play a part.

The study, by researchers at the University of Virginia and Ohio State University, is published in the May/June 2009 issue of the journal Child Development.

Parental guidelilnes, consequences may be why fewer black teens smoke than whites

It's a curious paradox. Black adults are more likely to smoke than white adults and most smokers start as teenagers. But statistics show that fewer black youths than whites begin smoking as adolescents.

Study finds surprising new pathway for North Atlantic circulation

Oceanographers have long known that the 20-year-old paradigm for describing the global ocean circulation- called the Great Ocean Conveyor - was an oversimplification. It's a useful depiction, but it's like describing Beethoven's Fifth Symphony as a catchy tune.

Cold water ocean circulation doesn't work as expected

DURHAM, N.C. -- The familiar model of Atlantic ocean currents that shows a discrete "conveyor belt" of deep, cold water flowing southward from the Labrador Sea is probably all wet.

Vaccine slows progression of skeletal muscle disorder

Irvine, Calif., May 13, 2009 - A potential vaccine for Alzheimer's disease also has been shown in mice to slow the weakening of muscles associated with inclusion body myositis, a disorder that affects the elderly.

Scientists identify gene in breast cancer pathway

May 12, 2009 -- (BRONX, NY) -- Scientists at Albert Einstein College of Medicine of Yeshiva University have discovered how a gene crucial in triggering the spread of breast cancer is turned on and off. The findings could help predict whether breast tumors will metastasize and also reveal potential drug targets for preventing metastasis.

A stronger backbone: DHEA hormone replacement increases bone density in older women

ST. LOUIS - Taking a DHEA supplement combined with vitamin D and calcium can significantly improve spinal bone density in older women, according to a new study from a Saint Louis University scientist and his colleagues at Washington University.

OHSU researchers study the idling brain

PORTLAND, Ore - Oregon Health & Science University researchers, along with scientists at Washington University in St. Louis, are uncovering new information about the mind by studying the brain while it is at rest. It is believed this research will one day provide new tools for diagnosing mental health disorders and monitoring the progress of treatments.

New analysis shows 'hobbits' couldn't hustle

A detailed analysis of the feet of Homo floresiensis--the miniature hominins who lived on a remote island in eastern Indonesia until 18,000 years ago--may help settle a question hotly debated among paleontologists: how similar was this population to modern humans? A new research paper, featured on the cover of the current issue of Nature, may answer this question.

Even mildly premature infants have increased risk of a common respiratory tract infection

Even mildly premature infants (gestational ages of 33 weeks through 36 weeks) have an increased risk of medically attended respiratory syncytial virus infection, which is the leading cause of lower respiratory tract infection in infants and young children and can lead to pneumonia in babies, according to a Kaiser Permanente Division of Research study.

Children who view adult-targeted TV may become sexually active earlier in life

Boston, Mass. -- Early onset of sexual activity among teens may relate to the amount of adult content children were exposed to during their childhood, according to a new study released by Children's Hospital Boston.

Narcolepsy is an autoimmune disorder, Stanford researcher says

STANFORD, Calif. -- Ten years ago, Stanford University School of Medicine scientist Emmanuel Mignot, MD, PhD, and his colleagues made headlines when they identified the culprit behind the sleep disorder narcolepsy.

Plants could override climate change effects on wildfires

LIVERMORE, Calif. - Rising temperatures may lead to more tinder-dry vegetation, but that doesn't mean there will be a higher risk for wildfires in a particular area.



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