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141,196 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...

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...

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.

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.

Researchers translate a bird's brain activity into song

It is possible to re-create a bird's song by reading only its brain activity, shows a first proof-of-concept study. The researchers were able to reproduce the songbird's complex vocalizations down to the pitch, volume and timbre of the original. The study is a first step towards developing vocal prostheses for humans who have lost the ability to speak.

Start-stop system of hunting immune cells

Researchers decipher the basic biology of neutrophil swarming and now show that the cells also evolved an intrinsic molecular program to self-limit their swarming activity. The study elucidates how swarming neutrophils become insensitive to their own secreted signals that brought the swarm together in the first place. This process is crucial for the efficient elimination of bacteria in tissues.

Managed retreat: A must in the war against climate change

Climate change will shape the future of coastal communities, with flood walls, elevated structures and possibly even floating cities used to combat sea level rise. New research has found that managed retreat -- moving buildings, homes or communities off of the coast or away from floodplains -- must be part of any solution.

Sacred natural sites protect biodiversity in Iran

How much do traditional practices contribute to the protection of local biodiversity? Why and how are sacred groves locally valued and protected, and how can this be promoted and harnessed for environmental protection? Researchers have examined the backgrounds of this form of local environmental protection in Baneh County, Iran.

Greenhouse gas data deep dive reaches new level of 'reasonable and true'

For the most accurate accounting of a product's environmental impact, scientists look at the product's entire life cycle, from cradle to grave. It's a grand calculation known as a life cycle assessment (LCA), and greenhouse gas emissions are a key component. For corn ethanol, most greenhouse gas emissions can be mapped to the fuel's production, transportation, and combustion, but a large portion...