The human body is filled with friendly bacteria. However, some of these microorganisms, such as Veillonella parvula, may be too nice. These peaceful bacteria engage in a one-sided relationship with pathogen Porphyromonas gingivalis, helping the germ multiply and cause gum disease, according to a new study.

A biology-based mathematical model indicates why COVID-19 outcomes vary widely and how therapy can be tailored to match the needs of specific patient groups.

Fishermen contend with regulations, natural disasters, and the ups and downs of the stocks they fish, along with many other changes. As a result, fishing communities are quite resilient. That is, they can withstand, recover from, and adapt to change.

Researchers describe the biology of three families of RNA viruses including Coronavirus, Ebola, and Zika and the natural products that have been shown to have capabilities to inhibit them. The review provides a guide that could accelerate drug discovery in response to future epidemics.

As they age, people with diabetes are more likely to develop Alzheimer's disease and other cognitive disorders than are people without diabetes. Scientists now have shown that routine eye imaging can identify changes in the retina that may be associated with cognitive disorders in older people with type 1 diabetes. These results may open up a relatively easy method for early detection of cognitive...

To stop biodiversity loss, Canada recently committed to protecting 30% of its land and sea by 2030. But making conservation decisions about where to locate new protected areas is complicated. It depends on data both about biodiversity and about a range of benefits (e.g. freshwater, climate regulation, recreation) that people get from nature. Despite the size of the country, new mapping suggests...

Most of the mangrove forests on the coasts of Oman disappeared about 6,000 years ago. Until now, the reason for this was not entirely clear. A current study now sheds light on this: It indicates that the collapse of coastal ecosystems was caused by climatic changes.

A research team has successfully used machine learning -- computer algorithms that improve themselves by learning patterns in data -- to complete cumbersome materials science calculations more than 40,000 times faster than normal.

Rocks on Ryugu, a 'rubble pile' near-Earth asteroid recently visited by Japan's Hayabusa2 spacecraft, appear to have lost much of their water before they came together to form the asteroid, new research suggests.

The asteroid impact 66 million years ago that ushered in a mass extinction and ended the dinosaurs also killed off many of the plants that they relied on for food. Fossil leaf assemblages from Patagonia, Argentina, suggest that vegetation in South America suffered great losses but rebounded quickly, according to an international team of researchers.

Repeated intravenous (IV) ketamine infusions significantly reduce symptom severity in individuals with chronic post-traumatic stress disorder (PTSD) and the improvement is rapid and maintained for several weeks afterwards, according to a new study.

New research examined how to protect food chains from environmental shocks -- everything from floods, droughts, and extreme heat to other phenomena like natural hazards, pests, disease, algal blooms, and coral bleaching.

Self-control of one's thoughts, feelings and behaviors is one of the personality traits that makes a child ready for school. And, it turns out, ready for life as well. A large study tracking 1,000 people from birth through age 45 has determined that people who had higher levels of self-control as children were aging more slowly than their peers at age 45. Their bodies and brains were healthier and...

The study found that 'loading' a chemotherapy drug on to tiny magnetic particles that can heat up the cancer cells at the same time as delivering the drug to them was up to 34% more effective at destroying the cancer cells than the chemotherapy drug without added heat.

The transition from the Medieval Warm Period to the Little Ice Age was apparently accompanied by severe droughts between 1302 and 1307 in Europe. Researchers write that the 1302-07 weather patterns display similarities to the 2018 weather anomaly, in which continental Europe experienced exceptional heat and drought.

One sweaty, huffing, exercising person emits as many chemicals from their body as up to five sedentary people, according to a new study. And notably, those human emissions, including amino acids from sweat or acetone from breath, chemically combine with bleach cleaners to form new airborne chemicals with unknown impacts to indoor air quality.

A loss of enzymatic processes within the body can increase a person's risk of bone fracture.

Researchers report the development of a new COVID-19 test that reduces testing time from 30 minutes to less than five and delivers accurate results.

A new study helps to shed light on the winter weather we may soon have in store following a dramatic meteorological event currently unfolding high above the North Pole.

Researchers demonstrate the first transparent solar cell. Their innovative technique rests on a specific part of the solar cell: the heterojunction, made up of thin films of materials responsible for absorbing light. By combining the unique properties of titanium dioxide and nickel oxide semiconductors, the researchers were able to generate an efficient, transparent solar cell.

Gastroesophageal reflux disease is a common condition affecting 30 percent of the US population and often controlled with medication. While doctors commonly recommend specific dietary and lifestyle changes to control symptoms, there is little evidence about their effectiveness. Results of a large-scale study suggest such changes, including regular exercise, can reduce symptoms substantially.

Operators of Jefferson Lab's primary particle accelerator are getting a new tool to help them quickly address issues that can prevent it from running smoothly. The machine learning system has passed its first two-week test, correctly identifying glitchy accelerator components and the type of glitches they're experiencing in near-real-time. An analysis of the results of the first field test of the...

New research shows how X-Men villain Magneto's super powers could really work. Researchers have made the first observations of biological magnetoreception - live, unaltered cells responding to a magnetic field in real time. This discovery is a crucial step in understanding how animals from birds to butterflies navigate using Earth's magnetic field and addressing the question of whether weak...

Two studies show that Danes aren't quite as good as Chinese at discerning bitter tastes. The research suggests that this is related to anatomical differences upon the tongues of Danish and Chinese people.