How Pluto got its 'heart'

April 15, 2024

This artist's illustration shows the impact of Pluto by another large body.

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Study sheds light on ancient solar activity using radiocarbon locked in tree-rings

Analyzing radiocarbon in tree-ring samples, scientists from the University of Arizona Laboratory for Tree-Ring Research and ETH Zurich in Switzerland created the most detailed record yet of solar activity during the first millennium B.C.E. The data confirmed the unusually stable period of solar activity and revealed unique patterns that can help date archaeological artifacts.

Growing a Borderlands Workforce

MIS, nursing, legal writing excel in latest US News rankings for graduate programs

Dozens of U of A programs are recognized as among the best in the nation in U.S. News & World Report's Best Graduate Schools rankings.