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Women In Climate Change: Ellen Mcmahon

UArizona is celebrating Women's History Month by highlighting a few climate researchers across campus who hope to create a better future for everyone.

Increased Heat And Drought Stunt Tropical Trees, A Major Carbon Sink

UArizona researchers were leaders in a worldwide effort to understand tropical trees and their futures under climate change.

Astronomers Glimpse Giant Planet In Its Infancy

In what is possibly the first direct evidence of a planet forming during an "intense and violent" breakup of a disk of swirling gas and dust, a nascent gas giant was spotted a long distance from its host star.

Social Isolation May Impact Brain Volume In Regions Linked To Higher Risk Of Dementia

Social isolation is linked to lower brain volume in areas related to cognition and a higher risk of dementia, according to research published today in Neurology. The study found that social isolation was linked to a 26% increased risk of dementia, separately from risk factors like depression and loneliness.

Alzheimer’s Disease Causes Cells To Overheat And ‘Fry Like Eggs’

Researchers have shown that aggregation of amyloid-beta, one of two key proteins implicated in Alzheimer’s disease, causes cells to overheat and ‘fry like eggs.’

Reducing TV Viewing To Less Than One Hour A Day Could Help Prevent More Than One In Ten Cases Of Coronary Heart Disease

Watching too much TV is associated with increased risk of coronary heart disease regardless of an individual’s genetic makeup, say a team of scientists at the University of Cambridge and the University of Hong Kong.

Parasites From Feasting At Stonehenge Found In Prehistoric Faeces

A study of ancient faeces uncovered at a settlement thought to have housed builders of the famous stone monument suggests that parasites got consumed via badly-cooked cow offal during epic winter feasts.

Cognitive Impairment From Severe COVID-19 Equivalent To 20 Years Of Ageing, Study Finds

Cognitive impairment as a result of severe COVID-19 is similar to that sustained between 50 and 70 years of age and is the equivalent to losing 10 IQ points, say a team of scientists from the University of Cambridge and Imperial College London.

Seven Hours Of Sleep Is Optimal In Middle And Old Age, Say Researchers

Seven hours is the ideal amount of sleep for people in their middle age and upwards, with too little or too much sleep associated with poorer cognitive performance and mental health, say researchers from the University of Cambridge and Fudan University.

Freshwater Habitats Are Fragile Pockets Of Exceptional Biodiversity, Study Finds

Ponds, lakes, rivers and streams cover only a tiny fraction of Earth's surface, yet they are home to a comparatively large number of different species, according to a study led by University of Arizona ecologists. The findings have implications for conservation efforts around the globe.

Understanding Black Grief

To understand the unique experience of Black loss, grief and bereavement, it's necessary to consider the collective grief Black Americans have suffered as the result of America's long history of racialization and racist violence, UArizona researchers say.

Researchers Home In On Thera Volcano Eruption Date

Tree-ring, ice core and volcano experts teamed up to identify one of the most climatically impactful volcanic eruptions in 4,000 years – Aniakchak II. In the process, they narrowed down potential dates for the Thera volcano eruption.

Researchers Find Link Between Parkinson's Gene And Vocal Issues That Could Lead To Earlier Diagnosis

Neuroscientists found that higher levels of the alpha-synuclein protein in the brain can lead to changes in vocal production.

Studies Compare Best Ways to Treat Wide-Neck Aneurysms

Microsurgery with clips is weighed against coils, stents deployed via catheters.

Planetary Defense Exercise Uses Apophis As Hazardous Asteroid Stand-In

Over 100 participants from 18 countries – including UArizona scientists and NASA's UArizona-led NEOWISE mission – took part in the international exercise.

Gene Variation May Be An Early Indicator For Gastric Cancer

A new study identified a gene variation that could inform clinicians which patients are more susceptible to developing stomach cancer.

Cities Are Heating Up. Urban Planners Should Prepare, Uarizona Researcher Says

As heat waves blaze across the United States, a University of Arizona researcher says city planners should take the lead in managing and mitigating extreme heat.

Vegetation Regulates Energy Exchange in the Arctic

Global warming is changing the Arctic by causing permafrost thaw, glacier melt, droughts, fires and changes in vegetation. These developments are strongly linked to the energy exchange between land and the atmosphere. Researchers at the University of Zurich have now shown that different plant communities in the tundra play a key role in this energy exchange but are not taken into account in climate models.

Vocal Communication Originated over 400 Million Years Ago

Acoustic communication is not only widespread in land vertebrates like birds and mammals, but also in reptiles, amphibians and fishes. Many of them are usually considered mute, but in fact show broad and complex acoustic repertoires. According to researchers at the University of Zurich, the evolutionary origin of vocal communication dates back more than 400 million years.

Genetic Defects Lead to Enamel Malformations

Mutations in a certain molecule result in severe damage in the structure and mineral composition of tooth enamel in mice, according to a study conducted at the UZH Center of Dental Medicine. The researchers combined genetic, molecular and imaging techniques.