Regular crosswords and number puzzles linked to sharper brain in later life

Older adults who regularly take part in word and number puzzles have sharper brains, according to the largest online study to date.

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Just like toothpaste: Fluoride radically improves the stability of perovskite solar cells

Solar cells made of perovskite hold much promise for the future of solar energy. The material is cheap, easy to produce and almost as efficient as silicon, the material traditionally used in solar cells. However, perovskite degrades quickly, severely limiting its efficiency and stability over time. Researchers from Eindhoven University of Technology, energy research institute DIFFER, Peking University and University of Twente have discovered that adding a small amount of fluoride to the perovskite leaves a protective layer, increasing stability of the materials and the solar cells significantly. The solar cells retain 90 percent of their efficiency after 1000 hours operation at various extreme testing conditions. The findings are published today in the leading scientific journal Nature Energy.

* This article was originally published here

Study identifies how cancer drug inhibits DNA repair in cancer cells

According to researchers at Yale Cancer Center, a cancer drug thought to be of limited use possesses a superpower of sorts: It is able to stop certain cancer cells from repairing their DNA in order to survive. The study, published today in the journal Science Translational Medicine, suggests that combining this drug, cediranib, with other agents could potentially deliver a lethal blow in cancer that uses a specific pathway—or process—to create DNA repair cells.

* This article was originally published here

Augmented reality affects people's behavior in the real world

As major technology firms race to roll out augmented reality products, Stanford researchers are learning how it affects people's behavior – in both the physical world and a digitally enhanced one.

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Same computer password for the last 10 years? You might need a vibrating cybernudge

Technology used in exercise and lifestyle apps may hold the key to answering that most difficult of challenges—getting people to change their passwords and better protect their online privacy and data.

* This article was originally published here

'Striking' differences in rates of HIV/AIDS within African nations

Despite the rapid scale-up of antiretroviral therapy (ART) since 2000, HIV/AIDS is still the most common cause of death in sub-Saharan Africa, according to data from the Global Burden of Disease.

* This article was originally published here

Cellular rivalry promotes healthy skin development

Not all cells are destined for greatness. Deemed unfit to serve in the body, some are killed off during early development through a process called cell competition. This phenomenon has previously been documented in flies and is now turning out to occur in mammals as well.

* This article was originally published here

New clinical pathway for cancer patients leads to better outcomes, lower health care costs

A new clinical pathway for cancer patients at Christiana Care Health System's Helen F. Graham Cancer Center & Research Institute is improving their quality of life, providing better health outcomes and delivering lower heath care costs, according to a study published in the May 2019 issue of the Journal of Clinical Pathways.

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Some LGBT employees feel less supported at federal agencies

Workplace inequality is visible when it involves gender and race, but less so with sexual identity and gender expression.

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A friction reduction system for deformable robotic fingertips

Researchers at Kanazawa University have recently developed a friction reduction system based on a lubricating effect, which could have interesting soft robotics applications. Their system, presented in a paper published in Taylor & Francis' Advanced Robotics journal, could aid the development of robots that can efficiently manipulate objects under both dry and wet conditions.

* This article was originally published here

WhatsApp flaw let spies take control with calls alone (Update)

Spyware crafted by a sophisticated group of hackers-for-hire took advantage of a flaw in the popular WhatsApp communications program to remotely hijack dozens of targeted phones without any user interaction.

* This article was originally published here

Researchers pinpoint why lymphoma patients may become resistant to specific therapy

With more targeted therapies being approved each year for cancer, the development of drug resistance to these agents is a growing concern. It has often been assumed that drug resistance is due to the presence or development of additional genetic alterations; however, it is now clear that resistance mechanisms are more complicated. Researchers from Moffitt Cancer Center and Dana-Farber Cancer Institute have discovered a mechanism of drug resistance to Venetoclax, also known as ABT-199, a BCL-2 targeting drug commonly used to treat chronic lymphocytic leukemia and acute myeloid leukemia. Their findings, published in the journal Cancer Cell, also suggest a possible co-treatment strategy to overcome this resistance.

* This article was originally published here

Mortality and climate

Climate variability, which might arise through global warming or other factors has been shown to have an impact on mortality rates in sub-Saharan Africa, according to research published in the International Journal of Environment and Sustainable Development.

* This article was originally published here