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Katherine Mackey

Associate Professor of Earth System Science

Earth System Science

kmackey@uci.edu

Mackey studies the boundary between the living and the nonliving worlds. She wants to know how those two worlds define one other, as things like aquatic microorganisms can alter the chemistry of the water they live in, and vice versa.

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As seen in

Stories

The Arctic’s greening, but it won’t save us

The Arctic is getting greener as the climate warms — but it’s not greening fast enough to absorb very much carbon dioxide, Boston University and UC Irvine scientists find.

Apr 29, 2021

Can something the size of a few washing machines find the biggest thing in the universe?

UCI physicists have designed and built a new particle detector called FASER that could lift the veil on one of the universe’s most enduring mysteries.

Dec 7, 2020

UCI scientists decrypt key HIV transmission pathways

Understanding how HIV propagates in the body could help with the development of new treatments for the disease it causes — AIDS.

Apr 8, 2021

Press Releases

UC Irvine astronomers discover nearby exoplanet in habitable zone

The team found that the surface may have liquid water on its surface – a necessary ingredient for life.

Oct 23, 2025

UC Irvine launches master's program in applied artificial intelligence for science

Timely degree equips scientists with industry-relevant AI skills.

Oct 3, 2025

Indoor surfaces act as massive sponges for harmful chemicals, UC Irvine-led study shows

Permeable materials in homes can retain volatile organic compounds for up to a year.

Sep 24, 2025

If you have questions, please contact our Sr. Science Writer, Lucas Joel, at ljoel@uci.edu