Study reveals long-term human impacts on reef fish
206,419 articles from PhysOrg
Career-readiness through cross-disciplinary project-based learning
Resource fishes—species targeted for human consumption—play a key role in reef ecosystems long before they end up on the dinner table. In Hawai'i, subsistence and recreational fishing of local resource fish represent more than half of the share of annual reef seafood consumption, while also playing a vital role in indigenous cultural life.
Study clarifies kinship of important plant group
WSU Everett faculty members from the Edward R. Murrow College of Communication, the Voiland College of Engineering & Architecture and the Carson College of Business observed that several industries challenge Science, Technology, Engineering, and Math (STEM) education to incorporate business and communication experiences to prepare students for the workplace. These recommendations encouraged WSU...
Acetate regulates immune cells for a precisely orchestrated immune defense
Asterids comprise around 100,000 flowering plants, from heather to tomatoes. Up to now, their family relationships had not yet been fully clarified. A new study by the University of Bonn, Pennsylvania State University (U.S.) and Fudan University (China) has now somewhat closed this knowledge gap. It is the world's most detailed phylogenetic analysis ever conducted for asterids. The results of the...
Researchers discover new electrocatalyst for turning carbon dioxide into liquid fuel
The concentration of acetate increases particularly sharply at the site of an infection in the body. As reported in the journal Cell Metabolism by a team of researchers from the University of Basel and colleagues, acetate supports the function of certain immune cells and thus helps to eliminate pathogens safely and efficiently.
Herbivores, not predators, most at risk of extinction
Catalysts speed up chemical reactions and form the backbone of many industrial processes. For example, they are essential in transforming heavy oil into gasoline or jet fuel. Today, catalysts are involved in over 80 percent of all manufactured products.
Rice researchers use InSight for deep Mars measurements
One million years ago, the extinction of large-bodied plant-eaters changed the trajectory of life on Earth. The disappearance of these large herbivores reshaped plant life, altered fire regimes across Earth's landscapes, and modified biogeochemical cycling in such a way that Earth's climate became slightly colder. A new study out today by Utah State University Assistant Professor of Watershed...
New acid mine drainage treatment turns waste into valuable critical minerals
Using data from NASA's InSight Lander on Mars, Rice University seismologists have made the first direct measurements of three subsurface boundaries from the crust to the core of the red planet.
Researchers examine food supply chain resiliency in the Pacific during COVID-19 pandemic
A new way to treat acid mine drainage (AMD) could help transform the environmental pollution problem into an important domestic source of the critical rare earth elements needed to produce technology ranging from smart phones to fighter jets, according to Penn State scientists.
Head back to school with '4 Be's' for mental health
The COVID-19 pandemic exposes weaknesses in the supply chain when countries go into lockdown. Some are small, such as the toilet paper shortages early on, that, while annoying, were eventually resolved. But what happens when the effects of the pandemic reach the food systems of countries highly reliant on food imports and income from abroad, and commerce slows to a halt?
At least five dead in US as downgraded Isaias reaches Canada
The COVID-19 pandemic has caused much stress and uncertainty for students, parents, teachers and staff. "For students and the adults who care for them, the desire is so strong to have our lives return to normal, which also involves schooling," says Craig Sawchuk, Ph.D., a Mayo Clinic psychologist. "School is one of the most important places that we learn and grow intellectually, socially and...
Bay Area coastal flooding triggers regionwide commute disruptions
Tropical storm Isaias left at least five people dead as it pounded the US eastern seaboard with driving winds and heavy rain, leaving millions without power, before moving across Canada on Wednesday.
In ancient Arabia, some tools were created to show off skills
For decades, the low-lying neighborhoods along the San Francisco Bay have experienced coastal flooding and the subsequent traffic disruptions. But a new computational model by Stanford researchers reveals that, due to the nature of road networks in the region, commuters living outside the areas of flooding may experience some of the largest commute delays.
New study reveals lower energy limit for life on Earth
People living in southern Arabia some 8,000 years ago created intricate stone weapons that were not just useful, but designed to "show off" their tool-making skills, a new study suggests.
Plate tectonics goes global
An international team of researchers led by Queen Mary University of London have discovered that microorganisms buried in sediment beneath the seafloor can survive on less energy than was previously known to support life. The study has implications for understanding the limit of life on Earth and the potential for life elsewhere.
Satellite images reveal land productivity changes in protected areas worldwide
Today, the entire globe is broken up into tectonic plates that are shifting past each other, causing the continents to drift slowly but steadily. But this has not always been the case.
Molecular forces: The surprising stretching behavior of DNA
Satellite observations suggest that protected areas may help conserve stable levels of land productivity. However, productivity has dropped or risen in nearly half of the total land under protection worldwide, pointing to potentially detrimental factors. Begoña de la Fuente of Universidad Politécnica de Madrid, Spain, and colleagues from the Joint Research Centre of the European Commission,...
Journalists' Twitter use shows them talking within smaller bubbles
When large forces act on a heavy beam, for example, in bridge construction, the beam will be slightly deformed. Calculating the relationship between forces, internal stresses and deformations is one of the standard tasks in civil engineering. But what happens when you apply these considerations to tiny objects—for example, to a single DNA double helix?
New Guinea has the world's richest island flora
Usher and Ng, journalism professors at the University of Illinois, Urbana-Champaign, identified nine clusters of journalists or "communities of practice" in their study, published online by the journal Social Media + Society.
Ammonia-rich hail sheds new light on Jupiter's weather
New Guinea is the most floristically diverse island in the world, an international collaboration led by the University of Zurich has shown. The study presents a list of almost 14,000 plant species, compiled from online catalogs and verified by plant experts. The results are invaluable for research and conservation, and also underline the importance of expert knowledge in the digital era.
Trifluoroacetic acid acts as trifluoromethylating agent in arene C-H functionalization
New Juno results suggest that the violent thunderstorms taking place in Jupiter's atmosphere may form ammonia-rich hail, or 'mushballs,' that play a key role in the planet's atmospheric dynamics. This theory, developed using data from Juno's microwave radiometer by the Juno team, is described in two publications led by a researcher at the Laboratoire Lagrange (CNRS/Observatoire de la Côte...
The universe is the same everywhere we look—even more than cosmologists predicted
Researchers at the Shanghai Institute of Organic Chemistry of the Chinese Academy of Sciences have developed a catalytic system that directly installs the trifluoromethyl group onto arenes. The new reaction uses simple and abundant trifluoroacetic acid as the trifluoromethylating agent, and offers a milder alternative to the existing strategies.
Scientists find how clock gene wakes up green algae
No matter which direction you look in the universe, the view is basically the same if you look far enough. Our local neighborhood is populated with bright nebulae, star clusters and dark clouds of gas and dust. There are more stars toward the center of the Milky Way than there are in other directions. But across millions and billions of light-years, galaxies cluster evenly in all directions, and...
Uncovering our solar system's shape
A team of researchers from Nagoya University, Japan, has found the mechanism of the night-to-day transition of the circadian rhythm in green algae. The findings, published in the journal PLOS Genetics, could be applied to green algae to produce larger amounts of lipids, which are a possible sustainable source of biofuel.
Manifestation of quantum distance in flat band materials
Scientists have developed a new prediction of the shape of the bubble surrounding our solar system using a model developed with data from NASA missions.
The geometry of an object indicates its shape or the relationship of its parts to each other. Did you know that the electrons in solids also have geometric structures? In quantum mechanics, an electron in solids takes the form of a wave with periodicity so that the periodic electronic state, so-called the Bloch state, can be characterized by specifying its energy and crystal momentum which is...