ScienceDaily: Top News |
- Ancient shellfish remains rewrite 10,000-year history of El Nino cycles
- Promise for new nerve repair technique
- Editing HPV's genes to kill cervical cancer cells
- Expecting to teach enhances learning, recall
- Link between maternal age, emergency delivery shown
- Finding genetic culprits that drive antibiotic resistance: Genome-wide association study in disease-causing bacteria paves way for clinical tool
| Ancient shellfish remains rewrite 10,000-year history of El Nino cycles Posted: 08 Aug 2014 01:34 PM PDT Piles of ancient shells provide the first reliable long-term record for the powerful driver of year-to-year climate changes. Results show that the El Niños 10,000 years ago were as strong and frequent as they are today. The study results question how well computer models can reproduce historical El Niño cycles, or predict how they could change under future climates.       |
| Promise for new nerve repair technique Posted: 08 Aug 2014 01:34 PM PDT A new nerve repair technique yields better results and fewer side effects than other existing techniques, research shows. Traumatic nerve injuries are common, and when nerves are severed, they do not heal on their own and must be repaired surgically. Injuries that are not clean-cut -- such as saw injuries, farm equipment injuries, and gunshot wounds -- may result in a gap in the nerve.  |
| Editing HPV's genes to kill cervical cancer cells Posted: 08 Aug 2014 01:34 PM PDT Using the genome editing tool known as CRISPR, researchers were able to selectively silence two genes in human papilloma virus that are responsible for the growth and survival of cervical carcinoma cells. After silencing the two HPV genes, the cancer cell's normal self-destruct machinery went into action.  |
| Expecting to teach enhances learning, recall Posted: 08 Aug 2014 01:34 PM PDT People learn better and recall more when given the impression that they will soon have to teach newly acquired material to someone else, suggests new research. Findings of the study suggest that simply telling learners that they would later teach another student changes their mindset enough so that they engage in more effective approaches to learning than did their peers who simply expected a test.  |
| Link between maternal age, emergency delivery shown Posted: 08 Aug 2014 01:34 PM PDT An increased risk of emergency operative delivery is linked with increasing maternal age, suggests a new study. The study used a sample of 169,583 low risk, first-time mothers in Norway, to examine the association between maternal age and emergency operative delivery, which include emergency caesarean section and operative vaginal delivery (forceps or ventouse).  |
| Posted: 07 Aug 2014 11:56 AM PDT A powerful new tool has been developed that could help in developing more effective treatment and control strategies for antibiotic resistance within the next decade. Researchers used a genome-wide association study (GWAS) to find the single-letter changes in the DNA of Streptococcus pneumoniae that enable it to evade antibiotic treatment. Until now, GWAS has been able to identify only general areas where DNA changes have occurred. However, by using a rich data set of over 3,000 samples, researchers have been able to get precise data on the locations of changes that cause resistance.  |
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