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48 articles from ScienceDaily
Scientists find iron 'snow' in Earth's core
- ScienceDaily
- 19/12/19 22:23
The Earth's inner core is hot, under immense pressure and 'snow'-capped, according to new research that could help scientists better understand forces that affect the entire planet. The snow is made of tiny particles of iron that fall from the molten outer core and pile on top of the inner core.
Conservation's hidden costs take bite out of benefits
- ScienceDaily
- 19/12/19 20:28
Scientists show that even popular conservation programs can harbor hidden costs, often for vulnerable populations.
Mimicking enzymes, chemists produce large, useful carbon rings
- ScienceDaily
- 19/12/19 20:28
Drawing inspiration from nature, chemists have discovered an efficient way to wrangle long, snaking molecules to form large rings -- rings that form the backbone of many pharmaceuticals but are difficult to produce in the lab.
385-million-year-old forest discovered
- ScienceDaily
- 19/12/19 20:28
While sifting through fossil soils in the Catskill region near Cairo, New York, researchers uncovered the extensive root system of 385-million-year-old trees that already appeared to have leaves and wood. The finding is the first piece of evidence that the transition toward forests as we know them today began earlier in the Devonian Period than typically believed.
Why your first battle with flu matters most
- ScienceDaily
- 19/12/19 20:28
Analyzing public health records from Arizona to study how different strains of the flu virus affect people of different ages, researchers found that the first strain we encounter during childhood sets the course of how our immune system responds to exposures later in life.
Finding your way in the dark depends on your internal clock
- ScienceDaily
- 19/12/19 20:28
Surprising results show how circadian rhythm changes the way mammals can see. Mice can accomplish a vision task better at night than during day. The researchers expected the body's internal clock to alter how strong nerve signals were at night, but discovered that the animal's behavior changed depending on the time of day instead. This opens interesting lines of inqury into how circadian rhythm...
Scientists discover medicinal cannabis substitute for treating Parkinson's disease
- ScienceDaily
- 19/12/19 20:28
A drug that provides the benefits obtained from medicinal cannabis without the 'high' or other side effects may help to unlock a new treatment for Parkinson's disease.
Biodiversity has substantially changed in one of the largest Mediterranean wetlands
- ScienceDaily
- 19/12/19 20:28
The Camargue area in France has considerably fewer grasshopper, cricket, locust, dragonfly, and amphibian species than 40 years ago. On the other hand, there are more birds and vascular plants, some of them considered as new and highly invasive species.
Advanced imaging tips T cell target recognition on its head
- ScienceDaily
- 19/12/19 20:28
T cells represent a key component of our immune system, and play a critical role in protecting us against harmful pathogens like viruses and bacteria, and cancers. A team of scientists has redefined what we thought we knew about T cell recognition for the past 20 years.
Bacteria spread by ticks affected by humidity and mutual competition
- ScienceDaily
- 19/12/19 20:27
No specific environment or temperature favorable to all of the most common pathogens borne by ticks was found in an international study, since different bacterial species thrive in different conditions. Depending on the species, bacteria found inside ticks can either compete with each other or promote each other's distribution.
Form of severe malnutrition linked to DNA modification
- ScienceDaily
- 19/12/19 20:27
Researchers identified significant differences at the epigenetic level -- the chemical tags in DNA that help regulate gene expression -- between two clinically distinct forms of acute childhood malnutrition known as edematous severe acute malnutrition (ESAM) and non-edematous SAM (NESAM).
Easy prey: The largest bears in the world use small streams to fatten up on salmon
- ScienceDaily
- 19/12/19 20:27
A new study reveals a different picture of how and when brown bears in southwestern Alaska eat salmon. Most of these bears, also known as grizzlies, are dipping into small streams to capture their iconic prey.
Your DNA is not your destiny -- or a good predictor of your health
- ScienceDaily
- 19/12/19 20:27
In most cases, your genes have less than five per cent to do with your risk of developing a particular disease, according to new research.
Improving efficiency, effectiveness of security X-ray technology
- ScienceDaily
- 19/12/19 20:27
The smuggling of contraband is a threat in airport security and risks have increased in modern times with the uptick in parcel delivery, but security inspection methods have not seen any significant improvements. Researchers propose a technique for efficient detection of contraband items. Typically, airport security uses X-ray imaging to quickly scan baggage, but this suffers limitations. To...
The meaning of emotions may differ around the world
- ScienceDaily
- 19/12/19 20:27
Scientists found that emotions have different meanings across 2,474 spoken languages, but that there are universal sources of structure.
Mechanical force as a new way of starting chemical reactions
- ScienceDaily
- 19/12/19 20:27
Researchers have shown mechanical force can start chemical reactions, making them cheaper, more broadly applicable, and more environmentally friendly than conventional methods.
Meta-analysis indicates that one-fifth of the world's population exposed to Toxocara
- ScienceDaily
- 19/12/19 20:27
Human toxocariasis -- a neglected tropical disease found worldwide, can cause a range of allergic, neurological, cardiac, and other symptoms. However, it also goes unnoticed in many people who contract the infection. Now, researchers report that about 19% of the world's human population carries antibodies against Toxocara.
Integrating social and ecological science for effective coral reef conservation
- ScienceDaily
- 19/12/19 20:26
While many conservation plans focus on only environmental indicators for success, a new coral reef program is trying a relatively new approach: focusing on both social and ecological processes and outcomes to ensure a long-term future for coral reef systems.
Improved 3D nanoprinting technique to build nanoskyscrapers
- ScienceDaily
- 19/12/19 20:26
Scientists have improved the 3D nanoprinting process that enables to build precise, self-stacked, tall-and-narrow nanostructures. The team also used this technique to produce transparent nanoelectrodes with high optical transmission and controllable conductivity.
Novel 3D microscopy technique reveals new phenomena in living cells
- ScienceDaily
- 19/12/19 20:26
Combining image analysis with a three-dimensional microscopy technique allows researchers to quantify new or little-understood cell biology phenomena, according to a new study. The technique is likely to help explain little-understood aspects of the behavior of cell organelles -- the functional compartments within a cell.
Gene drives work faster than non-drive approaches to control problem insects
- ScienceDaily
- 19/12/19 20:26
When controlling mosquitoes that spread malaria, gene drives, which force genetic changes to proliferate in a population, are faster and more efficient than simply releasing mosquitoes that are immune to the parasite, according to a new study.
Researchers directly measure 'Cheerios effect' forces for the first time
- ScienceDaily
- 19/12/19 19:29
In a finding that could be useful in designing small aquatic robots, researchers have measured the forces that cause small objects to cluster together on the surface of a liquid -- a phenomenon known as the 'Cheerios effect.'
Bilingual children are strong, creative storytellers, study shows
- ScienceDaily
- 19/12/19 19:29
Bilingual children use as many words as monolingual children when telling a story, and demonstrate high levels of cognitive flexibility, according to new research.
Model beats Wall Street analysts in forecasting business financials
- ScienceDaily
- 19/12/19 19:29
Researchers describe a model for forecasting financials that uses only anonymized weekly credit card transactions and three-month earning reports. Tasked with predicting quarterly earnings of more than 30 companies, the model outperformed the combined estimates of expert Wall Street analysts on 57 percent of predictions.
Watermelon supplements bring health benefits to obese mice
- ScienceDaily
- 19/12/19 19:29
Eating watermelon in the form of powdered supplements helped adult obese mice avoid some detrimental health effects of an unhealthy diet, according to a new study.