Science & Technology
Researchers find benefits and drawbacks to two-step surgical approach for ‘leaky heart valves’
Patients with mitral and tricuspid valve regurgitation, a condition sometimes called ‘leaky heart valves,’ appeared to do better after two years if they had a tricuspid valve repair at the time of mitral valve surgery, according to a new study.
Anxiety cues found in the brain despite safe environment
Researchers used a virtual-reality environment to understand the impact anxiety has on the brain and how brain regions interact with one another to shape behavior.
Amazon Rainforest birds’ bodies transform due to climate change
The most pristine parts of the Amazon rainforest devoid of direct human contact are being impacted by human-induced climate change, according to new research. New analyses of data collected over the past four decades show that not only has the number o…
For stem cells, bigger doesn’t mean better
A new study suggests that enlargement of stem cells contributes to age-related decline in function. The researchers found that blood stem cells, which are among the smallest cells in the body, lose their ability to perform their normal function — repl…
DNA analysis confirms 2,000-year-old sustainable fishing practices of Tsleil-Waututh Nation
Ancient Indigenous fishing practices can be used to inform sustainable management and conservation today, according to a new study. Working with the Tsleil-Waututh Nation and using new palaeogenetic analytical techniques, the results of a new study pro…
Polymer discovery gives 3D-printed sand super strength
Researchers designed a novel polymer to bind and strengthen silica sand for binder jet additive manufacturing, a 3D-printing method used by industries for prototyping and part production.
Capturing a true picture of wolves in Yellowstone: Reevaluating aspen recovery
Previous studies evaluated aspen recovery in Yellowstone by measuring the five tallest young aspen within a stand, but sampling only the tallest young aspen estimated a rate of recovery that was significantly faster than was estimated by random samplin…
Illuminating dark matter in human DNA
Researchers have produced a single-cell chromatin atlas for the human genome. Delineating chromatin regions in cells of different human tissue types would be a major step toward understanding the role of gene regulatory elements (non-coding DNA) in hum…
Vascular defects appear to underlie the progression of Parkinson’s disease
In an unexpected discovery, researchers have identified what appears to be a significant vascular defect in patients with moderately severe Parkinson’s disease. The finding could help explain an earlier outcome of the same study, in which the drug nilo…
Best way to avoid procrastination
They say procrastination is the thief of time — actually deadlines are. New research has found that if you want someone to help you out with something, it is best not to set a deadline at all. But if you do set a deadline, make it short.