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  • UA to Observe Transit of Venus on June 5
    Tuesday, June 5, 2012

    On June 5, join the University of Arizona and organizations across Tucson for a rare opportunity to witness Venus crossing directly between the Earth and the sun.

    The darkened disk of Venus will glide over the face of the sun from about 3 p.m. until sunset. At several locations in Tucson, astronomers will set up special equipment to let the public safely watch this once-in-a-century celestial event.

    The events are free and open to the public and will include telescopes to...

  • A Mock Mission to Mars
    Tuesday, June 5, 2012

    In April 2012, a team of UA engineering seniors left their home at the University of Arizona and went on a 2-week simulated mission to Mars to test a camera they designed for NASA. The students’ senior project, part of the College of Engineering senior capstone program, was to develop the NASA-sponsored remote imaging system acquisition, or RISA.

    While they didn’t actually blast off to the Red Planet, they experienced a very real approximation of extraterrestrial living at...

  • Bigger Refuges Needed to Delay Pest Resistance to Biotech Corn
    Monday, June 4, 2012

    Genetically modified crops that produce insect-killing proteins from the bacterium Bacillus thuringiensis (Bt) have reduced reliance on insecticide sprays since 1996. These proteins are lethal to some devastating crop pests, but do not harm most other creatures including humans.

    Yet, just as insects become resistant to conventional insecticides, they also can evolve resistance to the Bt proteins in transgenic crops. 

    To delay pest resistance to Bt proteins, the U....

  • Arizona achievements in science go way back
    Sunday, June 3, 2012

    If necessity is the mother of invention, failure might be the father of discovery.

    That's certainly true in Arizona, where many of our scientific success stories came about in backward fashion.

    Today, we begin celebrating Arizona's scientific success stories - the deliberate and the inadvertent - with the Arizona Daily Star's Centennial list of the 100 most significant discoveries, institutions, inventions and developments in our scientific history.

    To create...

  • Former gold mine may shed light on dark matter
    Thursday, May 31, 2012

    LEAD, S.D. - Nestled nearly 5,000 feet underground in this gold-boom town is a laboratory that could help scientists answer some pretty heavy questions about life, its origins and the universe.

    It's hard to spot from the surface. Looking around the rustic town, there are far more nods to its mining past than to its scientific future. But on Wednesday, when part of the Homestake Gold Mine officially became an underground campus, Lead became the place where the elusive stuff called...

  • White dwarfs may hold key to mysteries of Milky Way
    Thursday, May 31, 2012

    LOS ANGELES - White dwarf stars are dying, burned-out cinders that have exhausted the hydrogen that sustained them. But scientists may soon count on these stellar flameouts to unravel the history of the Milky Way.

    In a study published online Wednesday by the journal Nature, astronomer Jason Kalirai described a new technique for calculating the masses and ages of old stars based on the masses of the white dwarfs they have become.

    The new information will help researchers better...

  • UA, Partners Launch Water Security Center for the Americas
    Tuesday, May 29, 2012

    AQUASEC, a new inter-American center of excellence on water security and policy outreach, has been launched by researchers at the University of Arizona and research and policy partners from Mexico and Chile. 

    The new center, created under the auspices of the Inter-American Institute for Global Change Research, or IAI, will be jointly hosted by the UA's Udall Center for Studies in Public Policy and the Center...

  • Short-haired bees buzzing back to British countryside
    Tuesday, May 29, 2012

    LONDON - They've been away, but now they are - hopefully - buzzing back to their rightful place in the bucolic British countryside.

    Around 50 short-haired bees were released into an English nature reserve Monday, some two decades after they were wiped out from most of rural Britain. Ecologists hope that with the support of farmers who have agreed to grow flowers and plants that help bees flourish they will zip across the country again.

    "Our farmland always used to have...

  • Climate talks stall over who's rich, who's poor
    Tuesday, May 29, 2012

    BONN, Germany - Another round of U.N. climate talks closed Friday without resolving how to share the burden of curbing man-made global warming, mainly because countries don't agree on who is rich and who is poor.

    China wants to maintain a decades-old division between developed and developing countries, bearing in mind that, historically, the West has released most of the heat-trapping gases that scientists say could cause catastrophic changes in climate.

    But the U.S. and...

  • UA Spring Gardens in Bloom
    Monday, May 21, 2012

    UA Cooperative Extension offers garden tours and plays a unique role in rural and urban Pima County. Extension educational programs promote environmental stewardship, family health and well-being, youth development and agriculture. Here, view colorful photos of garden plants via the UA's Facebook page.