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Scientists improve dating of early human settlement

A Simon Fraser University archaeologist and his colleagues at the University of Queensland in Australia have significantly narrowed down the time frame during which the last major chapter in human colonization, the Polynesian triangle, occurred.

SFU professor David Burley, Marshall Weisler and Jian-Xin Zhao argue the first boats arrived between 880 and 896 BC. The 16-year window is far smaller than the previous radiocarbon-dated estimate of 178 years between 2,789 and 2,947 years ago.

Discovery could hold the key to super-sensory hearing

The discovery of a previously unidentified hearing organ in the South American bushcrickets' ear could pave the way for technological advancements in bio-inspired acoustic sensors research, including medical imaging and hearing aid development.

Researchers from the University of Bristol and University of Lincoln discovered the missing piece of the jigsaw in the understanding of the process of energy transformation in the 'unconventional' ears of the bushcrickets (or katydids).

South American cricket ears shown to rival human hearing

Scientists studying a species of South American bush cricket with some of the smallest ears known have discovered it has hearing so sophisticated that it rivals our own.

The study, published in Science, is the first to identify hearing organs in an insect that are evolutionary convergent to those of mammals.

Archaeologists identify oldest spear points

A collaborative study involving researchers at Arizona State University, the University of Toronto, and the University of Cape Town found that human ancestors were making stone-tipped weapons 500,000 years ago at the South African archaeological site of Kathu Pan 1 – 200,000 years earlier than previously thought. This study, "Evidence for Early Hafted Hunting Technology," is published in the November 16 issue of the journal Science.

Bioprinting has promising future

Writing in the journal Science, Professor Derby of The School of Materials, looks at how the concept of using printer technology to build structures in which to grow cells, is helping to regenerate tissue.

Study finds how bacteria inactivate immune defenses

A new study by researchers at Imperial College London has identified a way in which Salmonella bacteria, which cause gastroenteritis and typhoid fever, counteract the defence mechanisms of human cells.

One way in which our cells fight off infections is by engulfing the smaller bacterial cells and then attacking them with toxic enzymes contained in small packets called lysosomes.

Simplifying heart surgery with stretchable electronics devices

Researchers at the McCormick School of Engineering are part of a team that has used stretchable electronics to create a multipurpose medical catheter that can both monitor heart functions and perform corrections on heart tissue during surgery.

Video-article shows how to purify magnetic bacteria

Magnetotactic bacteria, like Magnetospirillum magneticum, have evolved cellular processes that allow them to take up iron molecules to produce magnetic nanocrystals like magnetite. Since they were first discovered and isolated in 1975 by Robert Blakemore, scientists continue to be fascinated by these unique bacteria, whether as a means to isolate biogenic magnetite or to understand the evolutionary advantages of producing these minerals.

WSU scientists find new way for antibiotic resistance to spread

PULLMAN, Wash.—Washington State University researchers have found an unlikely recipe for antibiotic resistant bacteria: Mix cow dung and soil, and add urine infused with metabolized antibiotic. The urine will kill off normal E. coli in the dung-soil mixture. But antibiotic-resistant E. coli will survive in the soil to recolonize in a cow's gut through pasture, forage or bedding.

Young gamers offer insight to teaching new physicians robotic surgery

What can high school and college-age video game enthusiasts teach young surgeons-in-training?

According to a new study from researchers at the University of Texas Medical Branch at Galveston (UTMB) – a world leader in minimally invasive and robotic surgery – the superior hand-eye coordination and hand skills gained from hours of repetitive joystick maneuvers mimic the abilities needed to perform today's most technologically-advanced robotic surgeries.

Quick, high-volume test offers fast track in search for Alzheimer's drugs

An efficient, high-volume technique for testing potential drug treatments for Alzheimer's disease uncovered an organic compound that restored motor function and longevity to fruit flies with the disease, according to new research that could help put the search for an effective Alzheimer's drug on a faster track.

Study shows large-scale genomic testing feasible, impacts therapy

DENVER – Targeted cancer therapy has been transforming the care of patients with non-small-cell lung cancer (NSCLC). It is now standard practice for tumor specimens from NSCLC patients to be examined for EGFR mutations and ALK rearrangements to identify patients for therapy with EGFR and ALK inhibitors, respectively. Now, researchers say large-scale genomic testing is feasible within the clinical workflow, impacting therapeutic decisions.

Study shows bone metastases treatment can improve overall survival

DENVER – It is common for patients initially diagnosed with lung cancer to have the cancer spread to sites like the liver, brain and bone. One of the most frequent sites of metastases is the bone, with an estimated 30 to 40 percent of patients with non-small-cell lung cancer (NSCLC) developing bone loss. A study published in the December 2012 issue of the International Association for the Study of Lung Cancer's (IASLC) Journal of Thoracic Oncology, shows that the bone metastases drug denosumab was associated with improved overall survival compared with zoledonic acid (ZA).

Study shows different approach after progression in non-small cell lung cancer patients

DENVER – Right now, the best known treatment for patients with metastatic non-small cell lung cancer (NSCLC) with anaplastic lymphoma kinase gene rearrangements (ALK) or epidermal growth factor receptor mutations (EGFR) is crizotinib or EGFR tyrosine kinase inhibitors (TKIs), such as erlotinib, respectively. However, progression inevitably occurs. When it does, having no clear guidelines and/or indications, most patients are treated with chemotherapy.

At least one-third of marine species remain undescribed

At least one-third of the species that inhabit the world's oceans may remain completely unknown to science. That's despite the fact that more species have been described in the last decade than in any previous one, according to a report published online on November 15 in the Cell Press publication Current Biology that details the first comprehensive register of marine species of the world—a massive collaborative undertaking by hundreds of experts around the globe.