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University of Arizona


Study: One-third of plant and animal species could be gone in 50 years

A new study by University of Arizona researchers estimates that one in three plant and animal species may face extinction by 2070 due to climate change. The study analyzed data from hundreds of plant and animal species surveyed around the globe, finding that maximum annual temperatures are the key variable driving local extinctions.

SourceUniversity of Arizona·JournalProceedings of the National Academy of Sciences·DateFeb 12, 2020

Pedal to the metal: Speeding up treatments for ALS

Researchers found that healthy cells clear harmful aggregates via endocytosis, a process previously thought to occur only on external substances. This discovery could lead to improved treatments for ALS by increasing the efficiency of endocytosis. The next step is to develop ways to enhance this process using genetic and chemical methods.

SourceUniversity of Arizona·JournalMolecular and Cellular Biology·DateFeb 11, 2020

Gun owners aren't happier, don't sleep better at night

A study by University of Arizona researcher Terrence Hill found that gun ownership is not associated with improved happiness or better sleep. Gun owners were more likely to be married, which was driving their reported happiness. However, a separate study on sleep disturbance showed no difference between gun owners and non-gun owners.

SourceUniversity of Arizona·JournalPreventive Medicine·DateFeb 4, 2020

Save the giants, save the planet

A new study found that protecting large animals and plants can reduce wild animal biomass by 44% and soil fertility by 92%, highlighting their fundamental role in ecosystem integrity. Larger organisms transport nutrients, promoting productivity and ecological services.

SourceUniversity of Arizona·JournalNature Communications·DateFeb 4, 2020

Prosecutors' race, class bias may not drive criminal justice disparities

A new study led by Christopher Robertson found no significant differences in charges, fines, and sentences across racial and socioeconomic groups. This contradicts decades' worth of previous research on prosecutorial bias. Instead, policymakers may focus on addressing disparities before arrest, such as economic development and education.

SourceUniversity of Arizona·JournalJournal of Empirical Legal Studies·DateJan 17, 2020

Blue light can help heal mild traumatic brain injury

Researchers at the University of Arizona have discovered that early morning blue light exposure therapy can aid in the healing process of people impacted by mild traumatic brain injuries. The study found that improved sleep quality led to improvements in cognitive function, reduced daytime sleepiness, and actual brain repair.

SourceUniversity of Arizona·JournalNeurobiology of Disease·DateJan 15, 2020

Poplar genetically modified not to harm air quality grow as well as non-modified trees

Research collaboration discovers genetically modified poplar trees can grow and produce biomass without emitting harmful isoprene. The modification allows trees to adjust to climate stress through natural seasonal cycles, retaining their growth potential. This breakthrough could lead to more sustainable forest plantations.

SourceUniversity of Arizona·JournalProceedings of the National Academy of Sciences·DateJan 6, 2020

Deciphering the equations of life

Researchers developed equations to study life's diversity and predict specific traits, including reproduction timing and lifespan. The new theory refines old understandings about life history tradeoffs and has implications for ecosystem models and management decisions.

SourceUniversity of Arizona·JournalProceedings of the National Academy of Sciences·DateDec 11, 2019

Looking at tropical forests through new eyes

A University of Arizona-led team used air-based maps of plant chemistry to better understand tropical forest responses to climate change. By combining traditional on-the-ground measurements with aerial data, researchers improved carbon cycling models and gained insights into the role of forests in the global carbon cycle.

SourceUniversity of Arizona·JournalScience Advances·DateDec 4, 2019

How religion can heighten or help with financial stress

A study by University of Arizona researcher Ashley LeBaron found that religious involvement can both relieve and worsen financial stress. On one hand, religion can reduce materialism, bring monetary blessings, and foster a positive outlook on financial struggles. On the other hand, it can also impose increased financial obligations, re...

SourceUniversity of Arizona·JournalPsychology of Religion and Spirituality·DateNov 18, 2019

Mysteries behind interstellar buckyballs finally answered

A team of researchers from the University of Arizona has discovered a mechanism creating complex carbon molecules, such as C60, in a simulated planetary nebula environment. The study suggests that these molecules are derived from silicon carbide dust made by dying stars and can be dispersed throughout the interstellar medium.

SourceUniversity of Arizona·JournalThe Astrophysical Journal Letters·DateNov 13, 2019

Buying less is better than buying 'green' -- for the planet and your happiness

A new study from the University of Arizona suggests that reducing consumption is more effective in improving personal well-being and lower psychological distress compared to green buying. Participants with fewer materialistic values were more likely to engage in reduced consumption and reported higher personal well-being.

SourceUniversity of Arizona·JournalYoung Consumers Insight and Ideas for Responsible Marketers·DateOct 8, 2019

Renegade genes caught red handed

Researchers dispute the long-held belief that heterochromatin is a reliable guardian of the human genome. A study by University of Arizona researcher Keith Maggert reveals that heterochromatin can flicker on and off, allowing transposons to cause mutations and damage. This instability has significant implications for our understanding ...

SourceUniversity of Arizona·JournalProceedings of the National Academy of Sciences·DateSep 16, 2019

Building water-efficient cities

A study led by the University of Arizona found that city design factors such as housing density, lot size, and vegetated land cover significantly impact residential water use. Researchers estimated models for annual and summer water use in four cities, including Austin, Phoenix, Portland, and Salt Lake City.

SourceUniversity of Arizona·JournalJournal of the American Planning Association·DateSep 5, 2019

The Paleozoic diet: Why animals eat what they eat

A study published in Evolution Letters reveals that many carnivorous species share a common ancestor dating back 800 million years, while herbivory is more recent. The research suggests that animals tend to adopt the same dietary category as their closely related species, implying that switching diets may not be easy.

SourceUniversity of Arizona·JournalEvolution Letters·DateAug 22, 2019