A study of more than 60,000 women has found that sexual and physical abuse in childhood and adolescence is associated with a greater risk of laparoscopically-confirmed endometriosis diagnosed during adulthood. The study -- the largest of its kind -- found that women reporting severe-chronic abuse of multiple types had a 79 percent higher risk of laparoscopically-confirmed endometriosis.
Engineers have shed new light on a scientific mystery regarding the atomic-level mechanism of the sulfur embrittlement of nickel, a classic problem that has puzzled the scientific community for nearly a century. The discovery also enriches fundamental understanding of general grain boundaries that often control the mechanical and physical properties of polycrystalline materials.
Archaeologists from the Universities of Copenhagen and Cambridge, and University College London have unearthed the charred remains of a flatbread baked by Natufian hunter-gatherers 14,400 years ago. The results, published in the Proceedings of the National Academy of Sciences, provide the earliest empirical evidence for the production of bread, and suggest that bread production based [...]
The interaction of traveling waves in dissipative systems, physical systems driven by energy dissipation, can yield unexpected and sometimes chaotic results. These waves, known as dissipative pulses are driving experimental studies in a variety of areas that involve matter and energy flows.
Studying the photochemistry has shown that ultraviolet radiation can set off harmful chemical reactions in the human body and, alternatively, can provide 'photo-protection' by dispersing extra energy. To better understand the dynamics of these photochemical processes, a group of scientists irradiated the RNA base uracil with ultraviolet light and documented its behavior on a picosecond timescale.
Teens who spend lots of time using digital devices are prone to psychiatric problems, reports a team of scientists in a new study. Children who are heavy users of digital devices are twice as likely as infrequent users to show symptoms of attention-deficit/hyperactivity disorder (ADHD), the study finds.
A new discovery in how heart muscles maintain their shape in fruit flies sheds light on the crucial relationship between cardiac function, metabolism, and longevity. Researchers have discovered that maintaining high levels of the protein vinculin confers health benefits to fruit flies. Their work shows that fruit flies bred to produce 50 percent more vinculin enjoyed better cardiovascular health and lived a third of their average life span longer.
For some animals -- such as beetles, ants, toads, and primates -- short-term social isolation can be just as vital as social interaction to development and long-term evolution. Evolutionary biologists describe approaches for testing how an animal's isolation might impact natural selection and evolution. This framework can help design more effective breeding, reintroduction, and conservation strategies.
Researchers have reached a new milestone on the way to optical computing, or the use of light instead of electricity for computing. They explored a new way to select and send light of a specific color using long silicon wires that are several hundred nanometers in diameter and their work enabled a new type of nanoscale ''light switch'' that can turn on and off the transmission of one color of light over very long distances.
According to the Centers for Disease Control and Prevention, an estimated 1 out of 3 American adults live with higher than normal blood sugar levels known as prediabetes. Researchers recently found that while men may lose more weight on low-carb diets, women actually see better improvements in artery flexibility. It's a finding that may help pre-diabetic women reduce their risk for heart disease through a low-carb diet.
A team of scientists led by a University of Queensland biologist has discovered a new species of bandy-bandy snake on the west coast of the Cape York Peninsula in Australia. Bandy-bandies are members of the genus Vermicella, part of the cobra family Elapidae (elapids). These snakes are small (20-40 inches, or 50-100 cm long) black [...]
A new study found that young adults who had a parent incarcerated during their childhood are more likely to skip needed healthcare, smoke cigarettes, engage in risky sexual behaviors, and abuse alcohol, prescription and illicit drugs. These findings have a potentially broad impact, as more than five million US children have had a parent in jail or prison.
Twelve new moons orbiting Jupiter have been found -- 11 'normal' outer moons, and one that they're calling an 'oddball.' Astronomers first spotted the moons in the spring of 2017 while they were looking for very distant solar system objects as part of the hunt for a possible massive planet far beyond Pluto.
A new, highly accurate MRI technique can monitor iron levels in the brains of multiple sclerosis (MS) patients and help identify those at a higher risk for developing physical disability, according to a new study.
In a new study in mice, researchers have identified a key protein involved in the irregular brain cell activity seen in autism spectrum disorders and epilepsy. The protein, p53, is well-known in cancer biology as a tumor suppressor.