PM 2.5 field sensors

You Can See Clearly, For Now

By Craig Winston and Matthew Drews Opening Up States Will Reignite Air Pollution The skyline is more visible. The air looks and smells cleaner. There are “before” and “after” pictures of heavily polluted...

Upcoming Seminars & Special Events

May 2020
Tue, May 26th
2:00 pm - 3:00 pm Ask a Geologist: Monsoons


Thu, May 28th
2:00 pm - 3:00 pm Ask a Geologist: Pterosaurs


  • Michael Sprague

    Michael Sprague is a graduate student at Loma Linda University.

June 2020
Tue, Jun 2nd
2:00 pm - 3:00 pm Ask a Geologist: Meteorites


  • Sonia Tikoo-Schantz

    Dr. Sonia Tikoo-Schantz is a Assistant Professor of Geophysics at Stanford University. She utilizes paleomagnetism and fundamental rock magnetism as tools to investigate problems in the planetary sciences. By studying the remanent magnetism recorded within rocks from differentiated planetary bodies, she can learn about core processes that facilitate the generation of dynamo magnetic fields within the Earth, Moon, and planetesimals. Determining the longevities and paleointensities of dynamo fields that initially magnetized rocks also provides insight into the long-term thermal evolution (i.e., effects of secular cooling) of planetary bodies. Sonia also use paleomagnetism to understand impact cratering events, which are the most ubiquitous modifiers of planetary surfaces across the solar system. Impact events produce heat, shock, and sometimes hydrothermal systems that are all capable of resetting magnetization within impactites and target rocks via thermal, shock, and chemical processes. Therefore, she is able to use a combination of paleomagnetic and rock magnetic characterization to investigate shock pressures, temperatures, structural changes, and post-impact chemical alteration experienced by cratered planetary surfaces. More Information about Dr. Tikoo-Schantz

Thu, Jun 4th
11:00 am - 12:00 pm Ask a Geologist: Reconstructing Past Climate using Microfossils


Tue, Jun 9th
2:00 pm - 3:00 pm Ask a Geologist: Mosasaurs


  • Kiersten Formoso

    Kiersten Formoso is a Vertebrate Paleobiology PhD student in the Department of Earth Sciences at the University of Southern California and Graduate Student-in-Residence at the Natural History Museum of Los Angeles County. She is broadly interested in using functional morphology and biomechanics to answer the evolutionary question which arise in major transitions. More Information about Kiersten

Thu, Jun 11th
11:00 am - 12:00 pm Ask a Geologist: Greenland Glaciology


  • Sasha Leidman

    Sasha Leidman is a Geography PhD Student in the Department of Geography. He studies how melting on the Greenland Ice Sheet affects how much sunlight the ice can absorb. Increased melting on the surface of the ice caused by climate change increases the number of dark surfaces, resulting in even more sunlight absorption and melting. Sasha studies this potential domino effect at two locations on the ice sheet. In the upper regions, he drills shallow ice cores looking for layers of dark, refrozen melt-water in the snow. In lower regions, he wade through streams flowing over the ice taking velocity, brightness, and GPS measurements to determine how these rivers will change their shape in warming climates. More Information about Sasha

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