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Apparent Atlantic warming cycle likely an artifact of climate forcing

Science Daily - Hace 6 horas 55 mins
Volcanic eruptions, not natural variability, were the cause of an apparent 'Atlantic Multidecadal Oscillation,' a purported cycle of warming thought to have occurred on a timescale of 40 to 60 years during the pre-industrial era, according to a team of climate scientists who looked at a large array of climate modeling experiments.

Nuclear engineering researchers develop new resilient oxide dispersion strengthened alloy

Science Daily - Hace 6 horas 55 mins
Researchers have recently shown superior performance of a new oxide dispersion strengthened (ODS) alloy they developed for use in both fission and fusion reactors.

Less inflammation with a traditional Tanzanian diet than with a Western diet

Science Daily - Hace 6 horas 55 mins
Urban Tanzanians have a more activated immune system compared to their rural counterparts. The difference in diet appears to explain this difference: in the cities, people eat a more western style diet, while in rural areas a traditional diet is more common. A team of researchers believe that this increased activity of the immune system contributes to the rapid increase in non-communicable diseases in urban areas in Africa.

Can't solve a riddle? The answer might lie in knowing what doesn't work

Science Daily - Hace 6 horas 56 mins
With the help of about 200 human puzzle-takers, a computer model and functional MRI images, researchers have learned more about the processes of reasoning and decision making, pinpointing the brain pathway that springs into action when problem-solving goes south.

Earth has a hot new neighbor -- and it's an astronomer's dream

Science Daily - Hace 6 horas 56 mins
A rocky planet discovered in the Virgo constellation could change how we look for life in the universe.

Field study shows icing can cost wind turbines up to 80% of power production

Science Daily - Hace 6 horas 56 mins
Researchers took their studies of wind-turbine icing out of the lab and into the field to learn how and where ice accumulates on rotating blades. They learned ice on the blades can reduce power production by up to 80%. The field experiments also validated their experimental findings, theories and predictions.

Shark gets stabbed in the head, washes ashore in Los Cabos

Live Science - Hace 8 horas 8 mins
Dead sharks usually sink, so it's surprising to find one washed up onshore.

When peeking in your brain may help with mental illness

Science Daily - Hace 8 horas 12 mins
In recent years, researchers have begun using functional magnetic resonance imaging (fMRI) not just to better understand the neural bases of psychiatric illness, but also for experimental treatment of depression, ADHD, anxiety, PTSD, substance use disorder, and schizophrenia with real-time fMRI neurofeedback. But how well does it work?

Factoring in gravitomagnetism could do away with dark matter

Science Daily - Hace 8 horas 12 mins
Observations of galactic rotation curves give one of the strongest lines of evidence pointing towards the existence of dark matter, a non-baryonic form of matter that makes up an estimated 85% of the matter in the observable Universe. Current assessments of galactic rotation curves are based upon a framework of Newtonian accounts of gravity, a new article suggests that if this is substituted with a general relativity-based model, the need to recourse to dark matter is relieved, replaced by the effects of gravitomagnetism.

Animal aggression depends on rank within social hierarchies

Science Daily - Hace 8 horas 12 mins
New research shows that the more animals know about each other, the more they may be able to optimize their aggression.

Proteomics analysis identifies potential drug targets for aggressive human cancers

Science Daily - Hace 8 horas 12 mins
Researchers at Baylor College of Medicine show that analysis of the proteomics, or all the protein data, from aggressive human cancers is a useful approach to identify potential novel therapeutic targets.

Lonely? These odd rituals can help

Science Daily - Hace 8 horas 12 mins
A new study has found people who adopt unique rituals to make everyday tasks more meaningful might feel less lonely.

Could catnip become the new insect repellent?

Science Daily - Hace 8 horas 12 mins
New research may have people heading to their backyard instead of the store at the outset of this year's mosquito season.

Did woolly mammoths overlap with first humans in what is now New England?

Science Daily - Hace 8 horas 13 mins
Woolly mammoths may have walked the landscape at the same time as the earliest humans in what is now New England, according to a new study. Through the radiocarbon dating of a rib fragment from the Mount Holly mammoth from Mount Holly, Vt., the researchers learned that this mammoth existed approximately 12,800 years ago. This date may overlap with the arrival of the first humans in the Northeast, who are thought to have arrived around the same time.

Retracing the history of the mutation that gave rise to cancer decades later

Science Daily - Hace 8 horas 13 mins
Researchers reconstructed the evolutionary history of cancer cells in two patients, tracing the timeline of the mutation that causes the disease to a cell of origin. In a 63-year-old patient, it occurred at around age 19; in a 34-year-old patient, at around age 9.

Cancer 'guardian' breaks bad with one switch

Science Daily - Hace 8 horas 13 mins
A mutation that replaces a single amino acid in a potent tumor-suppressing protein makes it prone to nucleating amyloid fibrils implicated in many cancers as well as neurological diseases.

Extreme-scale computing and AI forecast a promising future for fusion power

Science Daily - Hace 8 horas 15 mins
New computer simulation forecasts a surprisingly optimistic heat load for future fusion facilities designed to harvest on Earth the fusion that powers the sun and stars to generate electricity.

Recommended for you: Role, impact of tools behind automated product picks explored

Science Daily - Hace 8 horas 15 mins
Researchers examined the role and economic impacts of recommender systems, and how they affect consumers' decisions.

Most Life on Earth Will Be Killed by Lack of Oxygen in a Billion Years

Slashdot - Science - Hace 9 horas 22 mins
One billion years from now, Earth's atmosphere will contain very little oxygen, making it uninhabitable for complex aerobic life. From a report: Today, oxygen makes up around 21 per cent of Earth's atmosphere. Its oxygen-rich nature is ideal for large and complex organisms, like humans, that require the gas to survive. But early in Earth's history, oxygen levels were much lower -- and they are likely to be low again in the distant future. Kazumi Ozaki at Toho University in Funabashi, Japan, and Chris Reinhard at the Georgia Institute of Technology in Atlanta modelled Earth's climatic, biological and geological systems to predict how atmospheric conditions on Earth will change. The researchers say that Earth's atmosphere will maintain high levels of oxygen for the next billion years before dramatically returning to low levels reminiscent of those that existed prior to what is known as the Great Oxidation Event of about 2.4 billion years ago. "We find that the Earth's oxygenated atmosphere will not be a permanent feature," says Ozaki. One central reason for the shift is that, as our sun ages, it will become hotter and release more energy. The researchers calculate that this will lead to a decrease in the amount of carbon dioxide in the atmosphere as CO2 absorbs heat and then breaks down. Ozaki and Reinhard estimate that in a billion years, carbon dioxide levels will become so low that photosynthesising organisms -- including plants -- will be unable to survive and produce oxygen. The mass extinction of these photosynthetic organisms will be the primary cause of the huge reduction in oxygen. "The drop in oxygen is very, very extreme -- we're talking around a million times less oxygen than there is today," says Reinhard.

Read more of this story at Slashdot.

Secret of the famous Pazyryk carpet: Fermented wool is the answer

Science Daily - Hace 9 horas 31 mins
Why are the red, yellow, and blue colors used in the world's oldest knotted-pile carpet still so vivid and bright, even after almost two and a half thousand years? Researchers have now been able to uncover the secrets behind the so-called Pazyryk carpet using high-resolution x-ray fluorescence microscopy.


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