Researchers have created a new model to evaluate the long-term economic benefits of top predator recovery, using sea otter recovery along the west coast of Canada as a case study.

Inoperable malignant pleural mesothelioma, is a rare and aggressive cancer of the protective lining of the lungs, or pleura, often caused by exposure to asbestos.

Researchers have found that a protein which is initially helpful in the body's immune response to a virus, can later interfere with the repair of lung tissue. The work highlights the need for careful consideration regarding the use of this protein to treat viruses, including coronavirus.

A research team evaluated 14 different types of Sichuan pickles from southwest China. They extracted 54 different strains of Lactobacilli and found that one, L. plantarum K41, significantly reduced the incidence and severity of cavities. K41 was also highly tolerant of acids and salts, an additional benefit as a probiotic for harsh oral conditions. It also could have potential commercial value...

Even in the most remote regions of the oceans plastic debris can be found. Usually it is impossible to determine how long they have been lying on the seabed. Up to now, this has also hampered attempts to estimate how long plastic degradation might take. Scientists have now examined plastic items that have verifiably been at the abyssal seabed for more than 20 years. They could not find any traces...

A new review of neurological symptoms of COVID-19 patients in current scientific literature reveals the disease poses a global threat to the entire nervous system. About half of hospitalized patients have neurological manifestations of COVID-19, which include headache, dizziness, decreased alertness, difficulty concentrating, disorders of smell and taste, seizures, strokes, weakness and muscle...

In a new mathematical model that bridges animal movement and disease spread, territorial behaviors decreased the severity of potential disease outbreaks -- but at the cost of increased disease persistence.

For people whose genes put them at risk of becoming obese, exclusive breastfeeding as a baby can help ward off weight gain later in life.

Researchers have found that astrocytes, a type of brain cell can harbor HIV and then spread the virus to immune cells that traffic out of the brain and into other organs. HIV moved from the brain via this route even when the virus was suppressed by combination antiretroviral therapy (cART), a standard treatment for HIV.

More than 120,000 novel human genetic variations that affect large regions of DNA have been discovered, some of which are linked to immune response, disease susceptibility or digestion.

Trinidadian guppies behave like matadors, focusing a predator's point of attack before dodging away at the last moment, new research shows.

Researchers provide new insights into how plants sense and respond to mechanical signals, such as cell swelling, rather than chemicals signals, such as nutrients or growth factors.

Watershed researchers estimate more than 1000 tons of microplastics (equal to more than 123 million plastic water bottles) are deposited in national parks and wilderness areas each year. Researchers used high-resolution atmospheric deposition data and identified samples of microplastics and other particulates collected over 14 months in 11 western U.S. national parks and wilderness areas. They...

A group of Japanese scientists has developed an ultrastable, selective catalyst to dehydrogenate propane - an essential process to produce the key petrochemical substance of propylene - without deactivation, even at temperatures of more than 600°C.

A research collaboration has demonstrated the function of a genetic pathway for anther development, with this pathway proven in 2019 work to be present widely in the flowering plants that evolved over 200 million years ago.

Using induced pluripotent stem cells (iPSCs) and deleting a key gene, researchers have created natural killer cells -- a type of immune cell -- with measurably stronger activity against a form of leukemia, both in vivo and in vitro.

A new study has produced the first analysis of seismic echoes from hundreds of earthquakes at once, revealing widespread structures at the core-mantle boundary. Previous studies were limited to analysis of single earthquakes, providing only a narrow window into the structure deep inside the Earth. This study enables a much wider view than ever before, revealing new, unexpected features and...

Researchers have developed the most precise way to build polyrotaxanes by using two artificial molecular pumps to install rings onto each end of a polymer string.

Striking images of some five billion brain cell connections have been created by scientists, mapping a lifetime's changes across the brain in minute detail.

A new study shows that patient-derived adult stem cells can be used to model major depressive disorder and test how a patient may respond to medication and that fish oil, when tested in the model, created an antidepressant response.

Two new studies show what can be learned from a short seismic checkup of natural rock arches and how erosion sculpts some arches -- like the iconic Delicate Arch -- into shapes that lend added strength.

More than 3 million Americans have glaucoma, a serious eye condition causing vision loss. Using human stem cell models, researchers found they could analyze deficits within cells damaged by glaucoma, with the potential to use this information to develop new strategies to slow the disease process.

A cosmic measurement technique independent of all others adds strong evidence pointing to a problem with the current theoretical model describing the composition and evolution of the Universe.

Fluorophores with one oxygen atom replaced by a sulfur atom can be triggered with light to create reactive oxygen species within cancer cells, killing them.