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40 articles from ScienceDaily

Memory helps us evaluate situations on the fly, not just recall the past

Scientists have long known the brain's hippocampus is crucial for long-term memory. Now a new study has found the hippocampus also plays a role in short-term memory and helps guide decision-making. The findings shed light on how the hippocampus contributes to memory and exploration, potentially leading to therapies that restore hippocampal function, which is impacted in memory-related aging and...

In the visual thalamus, neurons are in contact with both eyes but respond to only one

The visual thalamus is classically known to relay visual stimuli coming from the retina to the cerebral cortex. Researchers now show that although neurons in the mouse visual thalamus connect to both eyes, they establish strong functional connections only with one retina. These results settle partly contradictory results of earlier studies and demonstrate how important it can be to complement...

New therapeutic target for C. difficile infection

A new study paves the way for the development of next generation therapeutics for the prevention and treatment of Clostridioides difficile infection (CDI), the most frequent cause of healthcare-acquired gastrointestinal infections and death in developed countries.

Earlier flood forecasting could help avoid disaster in Japan

Researchers have revealed that a newly developed forecasting system can accurately predict flood locations 32 hours in advance. Extreme rainfall events are occurring increasingly frequently; such accurate and timely flood warnings will help to minimize their impact by providing time for measures to protect people and property.

Dragonflies: Species losses and gains in Germany

Over the past 35 years, there have been large shifts in the distributions of many dragonfly species in Germany. Those of standing water habitats have declined, probably due to loss of habitat. Running-water species and warm-adapted species have benefited from improved water quality and warmer temperatures. The study highlights the importance of citizen science and natural history societies for...

How childhood exercise could maintain and promote cognitive function in later life

People who are physically active during childhood have higher cognitive functions in later life. Participants who exercised when they were children did better on cognitive tests regardless of their current age. However, no such relationship was found between task performance and post-childhood exercise -- suggesting that exercise during childhood is particularly important for brain development and...

Atomic-scale tailoring of graphene approaches macroscopic world

Properties of materials are often defined by imperfections in their atomic structure, especially when the material itself is just one atom thick, such as graphene. Researchers have now developed a method for controlled creation of such imperfections into graphene at length scales approaching the macroscopic world. These results, confirmed by atomically resolved microscope images, serve as an...

Scientists detect signatures of life remotely

It could be a milestone on the path to detecting life on other planets: Scientists detect a key molecular property of all living organisms from a helicopter flying several kilometers above ground. The measurement technology could also open up opportunities for remote sensing of the Earth.

Will reduction in tau protein protect against Parkinson's and Lewy body dementias?

Will a reduction in tau protein in brain neurons protect against Parkinson's disease and Lewy body dementias? A new study suggests the answer is no. If this is borne out, that result differs from Alzheimer's disease, where reducing endogenous tau levels in brain neurons is protective for multiple models of the disease -- and thus suggests that the role of tau in the pathogenesis of Lewy body...

The end of Darwin's nightmare at Lake Victoria?

Lake Victoria, which came under the spotlight in 2004 by the documentary 'Darwin's nightmare', is not only suffering from the introduction and commercialization of the Nile perch: A study has highlighted other worrying phenomena, particularly climatic ones, which have an equally important impact on the quality of the lake's waters.

mRNA vaccine yields full protection against malaria in mice

Scientists developed an mRNA vaccine that protects against malaria in animal models. Malaria remains a large public health and economic burden worldwide as well as a danger to deployed Service Members. This vaccine uses mRNA accompanied by a lipid nanoparticle to prompt cells to code for circumsporozoite protein, which then triggers an immune response against malaria. The vaccine achieved high...