A new technique that allowed researchers to analyze genetic material from serum samples of HIV patients taken before AIDS was known provides a glimpse into the beginnings of the epidemic.
A UA-led team finds that the four Kuiper Belt Objects with the longest known orbital periods revolve around the sun in patterns most readily explained by the presence of such a planet.
Grasslands and grass crops, covering much of the world's land area and providing half of the calories humans eat, may be unable to respond quickly enough to a changing climate that is outpacing the plants' ability to adapt.
How does natural selection result in evolutionary change? A new method that dramatically reduces the complexity underlying how genetic information is translated into traits could provide biologists with a key.
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UA Science: A Place of Discovery and Innovation

Joaquin Ruiz, DeanThe University of Arizona College of Science brings together globally prominent faculty in disciplines at the core of scientific inquiry and education. One of the largest colleges at the University of Arizona, we are a nexus of award-winning programs that encourage both independent and collaborative-driven research. Our academic departments, schools and research units encompass the range of physical, mathematical, environmental, cognitive and life sciences. UA Science is among the most powerful and prolific academic research centers in the world, recognized and rewarded for the unparalleled caliber of our achievements. With over 7,500 undergraduate and graduate students, we are an integrative learning institution, where accomplished faculty and next-generation scientists engage side-by-side in groundbreaking research. Our scientists and students also share their knowledge with the local and broader community through extensive outreach and public service initiatives. Our mission is to encourage the aggressive pursuit of research excellence, to support novel teaching and outreach programs and to create economic opportunities for our community.

Joaquin Ruiz, Dean

A Chicken-Egg Question: Where Do Baby Genes Come From?
New genes are more likely to emerge fully developed from a genome's "junk" DNA than many scientists would have expected, according to new research by UA evolutionary biologists.
Tucson Region Outpaces Others in Western States for Extreme Weather
Evaluating conditions over a two-decade period, UA researchers found that Tucson has the greatest frequency of major storms when compared with other large metropolitan areas regionally.
National Phenology Network Hits 10M Records
An observer in North Dakota submitted the 10 millionth record to the UA network's database, which is a massive bank of data on plant and animal life cycles important for investigating environmental and climate change.
Radiocarbon Dating Gets a Postmodern Makeover
Developing new ways to use radiocarbon dating in tree rings, UA dendrochronologist Charlotte Pearson builds on the legacies of scientists before her, including famed UA researcher Andrew Douglass.
Impact Makers Honored at TLA Event
Tech Launch Arizona held its fourth annual awards event to honor those whose work directly affects the quality of life for people in Tucson, across Arizona and throughout the world.

Workplace Climate Survey

The College of Science is conducting a Workplace Climate Survey for faculty, staff, postdocs and graduate students. The results will be used to help ensure a positive, respectful, and inclusive workplace.

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Undergraduate Research

The research opportunities available to UA Science undergraduates make this college a smart choice for students who want to grow academically, socially, and intellectually.

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Tucson: Science Lives Here

UA Science invites you to experience telescopes atop of Tucson's highest peak, a century-old ecological laboratory and the world-class attraction, Biosphere 2.

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