Guatemala's Pacaya volcano has been erupting since February, keeping local communities and authorities on high alert.

Citrus greening disease was first discovered in Florida in 2005. Since then, production of oranges in the United States for processing has declined by 72 percent between the 2007-2008 growing season and the 2017-2018 growing season, primarily in Florida. The disease was discovered in California in 2012, and now the state is beginning to see a rapid increase of citrus greening disease.

A new study by the University of Georgia revealed that more college students change majors within the STEM pipeline than leave the career path of science, technology, engineering and mathematics altogether.

A Rutgers study finds that symbiotic bacteria that colonize root cells may be managed to produce hardier crops that need less fertilizer.

Brown bears that are more inclined to grate and rub against trees have more offspring and more mates, according to a University of Alberta study. The results suggest there might be a fitness component to the poorly understood behavior.

When the Big One hits, the first thing Washington residents notice may not be the ground shaking but their phone issuing a warning. The U.S. Geological Survey, the University of Washington-based Pacific Northwest Seismic Network, and the Washington Emergency Management District on Tuesday, May 4, will activate the system that sends earthquake early warnings throughout Washington state. This...

Chemically synthesized short DNA sequences are extremely important ingredients with countless uses in research laboratories, hospitals, and in industry, like in the method for identifying COVID-19. Phosphoramidites are necessary building blocks in the production of DNA sequences, but they are unstable, and break quickly. Ph.D. Alexander Sandahl (Professor Kurt Gothelf's group, Aarhus University)...

The Earth's first forest fires appear to have occurred earlier than previously thought, pointing out a link between widespread wildfires and ancient tree evolution, according to researchers at The University of Alabama.

High levels of a naturally occurring chemical called arsenic have been a source of contamination of ground-based drinking water, such as well-water, for people in many countries around the world, including parts of the United States. Consuming arsenic-contaminated water is a serious public health issue, leading to severe health complications including skin, lung, bladder, kidney and liver cancers,...

Surface plasmon polaritons (SPPs) are highly localized surface waves on the interface between metal and dielectric in the optical frequency band. SPPs do not naturally exist in the microwave and terahertz frequencies, so "spoof" surface plasmon polaritons (SSPPs) are necessary for operations in those lower frequency bands.

After a long journey, a group of settlers sets foot on an otherwise empty land. A vast expanse separates them from other human beings, cutting off any possibility of outside contact. Their choices will make the difference between survival and death.

Geochemical evidence reveals that armies in the Battles of Himera were a mixture of locals and outsiders, according to a study published March 24, 2021 in the open-access journal PLOS ONE by Katherine Reinberger of the University of Georgia, US, and colleagues. These data contradict certain claims made in historical accounts by ancient Greek writers.

When NASA's Ingenuity Mars Helicopter took to the Martian skies on its third flight on April 25, the agency's Perseverance rover was there to capture the historic moment. Now NASA engineers have rendered the flight in 3D, lending dramatic depth to the flight as the helicopter ascends, hovers, then zooms laterally off-screen before returning for a pinpoint landing. Seeing the sequence is a bit like...

The multiplexing capability of fluorescence microscopy is severely limited by the broad fluorescence spectral width. Spectral imaging offers potential solutions, yet typical approaches to disperse the local emission spectra notably impede the attainable throughput and place substantial constraints on temporal resolution. Tunable bandpass filters provide a possibility to scan through the emission...

Strawberry production is one of the driving forces in the Spanish agriculture sector, as strawberries are highly valued for their organoleptic characteristics and health benefits. These two factors, their economic relevance, and the value that consumers assign them, make this fruit an object of scientific research from multiple perspectives, including that of food safety. A research project headed...

Lysophospholipids are phospholipids that have just one fatty acid chain, and in recent years, the role of lysophospholipids in physiology and pathophysiology has attracted attention. Lysophosphatidylethanolamine (LPE) is a type of lysophospholipid that is reportedly present in the brain that consists of many species with different fatty acid chain lengths and degrees of unsaturation. The latest...

The three scientists credited with helping save lives ahead of a recent explosive volcano eruption in the eastern Caribbean island of St. Vincent are known to locals simply as Richie, Rod and TC.

Spacewalking is a major highlight of any astronaut's career. But there is a downside: putting on your spacesuit means sharing some previously-worn underlayers. A new ESA study is looking into how best to keep these items clean and hygienic as humans venture on to the Moon and beyond.

New collaborative research, led by the University of Oxford and published today in Ecological Solutions and Evidence, shows that a simple tropical forest assessment tool can robustly estimate forest condition, demonstrating high levels of agreement with detailed scientific data sets of biodiversity, forest structure and ecosystem functioning.

In 2020, stores sold out of garden seed, coops and rabbit cages. Now, we have an idea how much protein people can grow in their backyards.

Teeth play a central role in the ecology of most vertebrates—for catching prey, processing food and even attracting a mate. It's no surprise that scientists such as ourselves have long been interested in how teeth first evolved.

A new, patented method called Progressive Mechanoporation makes it possible to mechanically disrupt the membranes of cells for a short time period and let drugs or genes inside cells. In this way, researchers can test new therapies more easily than before.

The human brain is a vast network of billions of biological cells called neurons which fires electrical signals that process information, resulting in our senses and thoughts. The ion channels of atomic scale in each neuron cell membrane play a key role in such firings that open and close the ion flow in an individual cell by the electrical voltage applied across the cell membrane, acting as a...

Mighty floods have carved out deep canyons on Earth. New research suggests this may have required less power than previously thought. Collecting such data, however, may be demanding.