Features

To Buzz or to Scrabble? To Foraging Bees, That's the Question

Presenting bumblebees with various combinations of natural and artificial flowers laced with chemical and mechanical cues, UA biologists have discovered that for a bumblebee, foraging for pollen versus nectar is very different.

How Fast Is Greenland Melting?

A new analysis of Greenland's past temperatures will help scientists figure out how fast the island's vast ice sheet is melting, according to a new report from University of Arizona atmospheric scientists.

Asteroid Flyby to Help NASA Observation

For the first time, an actual, but harmless, space rock will be used for an observational campaign to test NASA's network of observatories and scientists who work with planetary defense.

The Science Behind Wildfires

Wildfires in Arizona have become more frequent and intense over time. As monsoon rains extinguished the 27,000-acre Burro Fire on Mount Lemmon, we asked University of Arizona fire ecologist Donald Falk to drive up with us and share his thoughts.

32 Students + 15,000 Insects Equals One Biological Clue

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.

Climate Change May Move Too Quickly for Grasses

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.

More Evidence for Ninth Planet on Solar System’s Fringes

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.

Findings Show How Aids Spread Across North America

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.

Birdsong Could Offer Clues to Human Speech Disorders

UA researcher Julie Miller believes birds can help us understand the genetics behind language problems associated with Parkinson's disease.

Shipwrecks, Tree Rings Reveal Caribbean Hurricanes

A UA researcher and her colleagues found a lull in Caribbean hurricanes during the Golden Age of Piracy corresponds to a low in sunspot activity.

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