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- Fun and games make for better learners
Four minutes of physical activity can improve behavior in the classroom for primary school students, according to new research. A brief, high-intensity interval exercise, or a 'FUNterval,' for Grade 2 and Grade 4 students reduced off-task behaviors like fidgeting or inattentiveness in the classroom.
- Is fleet diversity key to sustainable fisheries?
Concern about fisheries is widespread around the world. Over the past several decades, a robust discussion has taken place concerning how to manage fisheries better to benefit ecosystems and humans. Much of the discussion has focused on preserving biological diversity, a critical component of healthy ecosystems. One aspect that gets less attention is the role of fishing fleet diversity.
- Cell division, minus the cells
Researchers have reconstituted cell division -- complete with signals that direct molecular traffic -- without the cell. Combining frog-egg extracts with lipid membranes that mimic the membrane of the cell, they built a cell-free system that recapitulates how the cleavage furrow is assembled.
- Decoding the emergence of metastatic cancer stem cells
In the first study of its kind, researchers have mapped how information flows through the genetic circuits that cause cancer cells to become metastatic. The research reveals a common pattern in the decision-making that allows cancer cells to both migrate and form new tumors.
- Preventing cardiovascular disease in old aortas
Researchers look for the root cause of age-related aortic stiffness ? an early sign cardiovascular disease ? and uncover a potential therapeutic target for reducing or preventing its development. The underlying cause of aortic stiffening is unclear. While much of the previous research pointed to the extracellular matrix (ECM) -- a group of molecules secreted by the cells that support cell attachment and communication -- as the culprit, a few studies suggest that vascular smooth muscle may play a role.
- A matter of life and death: Cell death proteins key to fighting disease
key steps involved in programmed cell death have been uncovered by researchers, offering new targets for the treatment of diseases including lupus, cancers and neurodegenerative diseases.
- Improved mouse model will accelerate research on potential Ebola vaccines, tr...
The first genetic strain of mice that can be infected with Ebola and display symptoms similar to those that humans experience has been developed by researchers. This work will significantly improve basic research on Ebola treatments and vaccines, which are desperately needed to curb the worldwide public health and economic toll of the disease.
- Green spaces don't ensure biodiversity in urban areas
Green spaces in cities are great, but they don't ensure biodiversity, according to biologists. The team found insect abundance was lacking in two common urban trees, suggesting insect movement may be limited by barriers, such as roads and buildings.
- Lack of oxygen delayed the rise of animals on Earth
Scientists have long speculated as to why animal species didn't flourish sooner, once sufficient oxygen covered the Earth's surface. Animals began to prosper at the end of the Proterozoic period -- but what about the billion-year stretch before that, when most researchers think there also was plenty of oxygen? Yale University researcher Noah Planavsky and his colleagues found that oxygen levels during the 'boring billion' period were only 0.1 percent of what they are today.
- Advance directives can benefit patients, families, health care system
Nearly one out of four older Americans say that either they or a family member have experienced excessive or unwanted medical treatment, according to a report, which goes on to show that Americans strongly support holding doctors accountable when they fail to honor patients' end-of-life health care wishes.