Photosynthesis research could help assess the health of oceans

Photosynthesis leaves behind a unique calling card in the form of a chemical signature that is spelled out with stable oxygen isotopes, UCLA geochemists reported April 24 in the journal Science. The findings suggest that similar isotopic signatures could exist for many biological processes, including some that are difficult to observe with current tools.

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Summer 2015 Courses now available!

Planets, moons, asteroids, meteorites, oceans, & dinosaurs! Explore the coolest topics in science this summer with us! For more information about our classes visit UCLA registar or contact us at
For info about summer registration and fees visit the Summer Sessions Website.

Summer 2015 Courses

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All gifts to Earth, Planetary and Space Sciences, no matter their size, help the Department maintain and strengthen its international reputation for excellence, as well as its impact in the community.


Greetings from the Chairman

In the Department of Earth, Planetary, and Space Sciences, we seek to understand the Earth and the planets. Our students, researchers, and faculty tackle a wide range of problems, from the Sun to the most distant planets, and from the center of the Earth to the tenuous ionized gases of the solar wind. We probe the interior of the Earth using seismic data, laboratory measurements, and computer modeling. We study both the ancient tectonics of the Earth and its ongoing activity. We explore Earth's upper atmosphere using spacecraft to measure magnetic fields and plasmas. Moving outward from Earth, we study other planets, their interiors, surfaces, atmospheres, and particle and field environments.

--Kevin McKeegan

Upcoming Events

ESS 235C - Geocheminar

Title: Tracking Methane Sinks and Sources in the Atmosphere Using Clumped Isotopes
Date: May 26, 2015
Time: noon - 1 p.m.
Speaker: Mojhgan Haghnegahdar

ESS 295C - EPSS Colloquium

Title: Linking millennia of extreme weather in California to climate change
Date: May 28, 2015
Time: 4 p.m. - 5 p.m.
Speaker: Ingrid Hendy

ESS 286C - Planetary Science Seminar

Title: Seasonal and Internanual Variability in Saturn’s stratosphere
Date: May 28, 2015
Time: noon - 12:50 p.m.
Speaker: James Sinclair

News and Announcements

5/26/2015 - JPL-UCLA Planetary Science Workshop 2015

At long last, we are very happy to announce that JPL and UCLA have agreed upon a Memorandum of Understanding ...

5/08/2015 - William Newman featured on National Science Foundation

Professor William Newman was featured recently on National Science Foundation.

4/03/2015 - Jean-Luc Margot shows moon does not influence birth rate

The moon does not influence the timing of human births or hospital admissions, according to new research by Margot that ...