As glaciers melt faster, freshwater sources dwindle and sea-level rise accelerates

Feb. 19, 2025

A satellite image of glaciers in Alaska shows white flows of ice surrounded by dark green mountain ridges

Between 2000 and 2023, glaciers collectively lost 7,211 billion tons of ice, contributing almost three quarters of an inch to global sea-level rise, a new study finds.

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Sustainability & the Environment

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Science & Technology

Gallery: Fusion lecture provides energizing start to new series

Tomás Díaz de la Rubia, senior vice president for research and innovation, expressed his excitement surrounding future Distinguished Lecture Series events and hopes to host three or four each semester.

The fire paradox: Tree-ring data shows wildfire activity has declined, not increased

Contrary to what people might think, North American forests are burning less, not more, finds a new study co-authored by U of A fire ecologist Donald Falk. Researchers say the absence of fire can contribute to more severe wildfires in the future.

NASA’s OSIRIS-APEX Mission to Apophis: Key for Earth’s Defense

Asteroid Apophis, once feared to potentially impact Earth, will make a close flyby in 2029. NASA’s OSIRIS-APEX mission, led by University of Arizona, will catch up with Apophis just days after its closest encounter to Earth.