feed info

34 articles from ScienceDaily

Earthquake depth impacts potential tsunami threat

Earthquakes of similar magnitude can cause tsunamis of greatly varying sizes. This commonly observed, but not well-understood phenomenon has hindered reliable warnings of local tsunamis. This research provides new insight that connects the characteristics of earthquakes -- magnitude, depth where two tectonic plates slip past each other and the rigidity of the plates involved -- with the potential...

Mirror-image peptides form ‘rippled sheet’ structure predicted in 1953

By mixing a small peptide with equal amounts of its mirror image, scientists have created an unusual protein structure known as a 'rippled beta sheet' and obtained images of it using x-ray crystallography. The rippled sheet is a distinctive variation on the pleated beta sheet, which is a well-known structural motif found in thousands of proteins, including important disease-related proteins. Linus...

Discovering sources of Roman silver coinage from the Iberian Peninsula

Despite its prior status as a luxury commodity, silver became widely used for coinage in the Roman world from the 7th century BCE onward and provided a standardized monetary system for ancient Mediterranean civilizations. However, the sources of silver used to produce Roman coinage have largely been used up, making it difficult to determine which deposits Roman miners exploited.

Using ergonomics to reduce pain from technology use

The use of smartphones, tablets and laptops has become commonplace throughout the world and has been especially prevalent among college students. Recent studies have found that college students have higher levels of screen time, and they utilize multiple devices at higher rates compared to previous generations.

In last 15 years, deforestation made outdoor work unsafe for millions

The tropics is becoming hotter due to a combination of warming associated with deforestation and climate change -- and that can reduce the ability of outdoor workers to perform their jobs safely. Researchers estimated how many safe working hours people living in the tropics have lost due to local temperature change associated with loss of trees during the past 15 years.

Voluntary pledges could cut utility GHG emissions by a third

An analysis of pledges made by many of the largest U.S. electric utilities to reduce greenhouse gas (GHG) emissions suggests that pledged reductions could reduce power sector emissions by a third as compared to 2018 levels. The study also found that about one-seventh of the cuts utilities have promised are reductions they would have to make anyway due to existing state requirements.

Understanding cobalt’s human cost

After studying the impacts of mining cobalt -- a common ingredient in lithium-ion batteries -- on communities in Africa's Democratic Republic of the Congo (DRC), an interdisciplinary team of researchers is calling for more data into how emerging technologies affect human health and livelihoods.

Pain and anxiety impact breathing on a cellular level

A team of scientists has uncovered a neural network in the brain that coordinates breathing rhythm with feelings of pain and fear. Along with contributions to the fields of pain management, psychological theories of anxiety, and philosophical investigations into the nature of pain, their findings could lead to development of an analgesic that would prevent opioid-induced respiratory depression...

New major discovery in the animal kingdom: 14 new species of shrews

Researchers recently made a major discovery -- 14 new species of shrews, which is the largest number of new mammals described in a scientific paper since 1931. After a decade-long journey taking inventory of Indonesian shrews living on the island of Sulawesi, a group of scientists has identified 14 new endemic species.

Coast redwood and sequoia genome sequences completed

Scientists have completed the sequences for the coast redwood and giant sequoia genomes. The research helps better explain the genetic basis for these species' ability to adapt to their changing environments. The findings indicate that the coast redwood genome evolved from a single ancestral species.

Research takes early step towards drug to treat common diabetes complication hypoglycemia

New research has taken an important step towards the goal for a treatment for the common diabetes complication hypoglycemia, or low blood sugar. Researchers found a way help to defend against hypoglycemia by boosting hormonal defense systems. The team believes they have identified a promising target in the brain could be useful for future drug development to create an anti-hypoglycemia drug.

Redrawing the lines: Growing inexpensive, high-quality iron-based superconductors

Superconducting materials show zero electrical resistance at low temperatures, which allows them to conduct 'supercurrents' without dissipation. Recently, a group of scientists developed an inexpensive, scalable way to produce high-temperature superconductors using 'grain boundary engineering' techniques. The new method could help develop stronger, inexpensive, and high operating temperature...