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Fire historians are extending climate and fire records back in time, collecting evidence on Ice Age fires in the western hemisphere.
Many don't know it, but fresh water "rift valley" lakes covered Gates Pass and some rugged southern Arizona mountains when dinosaurs roamed the Earth.
University of Arizona engineers are developing new, environmentally friendly processes for making microchips. These processes soon will find their way to fabrication plants, where they will be used to build faster, smaller and more sophisticated electronics at lower cost.
Fewer U.S. students in natural sciences at undergraduate universities continue through grad school. A new survey examines why.
Victor Hruby, winner of the 2002 American Chemical Society's Hirschmann Award, says peptide chemistry is on the brink of controlling and modifying human behavior.
A long-obscure phenomenon that over time nudges asteroids into new orbits could be used to deflect small but dangerous asteroids away from Earth. (Photo: Galileo image of Gaspra, credited to NASA/JPL/Galileo Imaging Team)
Arizona Cooperative Extension has released a bulletin that describes prevention and control measures for roof rat infestations. Although roof rats have currently been identified in just one area of Phoenix, the rats can migrate.
UA astronomer Jill Bechtold's new survey at X-ray wavelengths of 17 distant quasars including the three most distant quasars yet found supports theory that predicts that supermassive black holes powered the most ancient quasars we see.
Superfloods continue to create controversy as scientists disagree over the magnitude of these floods, their timing and the extent to which they differ from floods that can be observed and measured today. In this month's issue of "Science," Professor Victor Baker, department head in Hydrology and Water Resources, looks at why the topic of superfloods has been and remains controversial among geologists.
UA scientists are developing a new inkjet printing process that produces such light-emitting devices as pictures and such photovoltaic devices as solar cells from digitized images on a computer.