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Caltech is a small, collaborative community, where faculty, postdoctoral scholars, students, and staff from diverse backgrounds, cultures, and experiences live, work, and engage with one another. Together, they remain committed to setting the example of what its intertwined missions of research and education can accomplish.

Caltech is an integral part of Pasadena. Together with JPL, we are the city's largest employer and a source of programs that benefit our neighbors: teachers, businesses, families, cultural centers, and government.

To stay up-to-date on upcoming events and the latest community news, visit Ion Caltech Today or subscribe to The Caltech Weekly.

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Public Events Series
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Caltech Associates
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External Relations
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Athletics & Recreation
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Performing & Visual Arts
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Center for Diversity

Events

All Events
September 7, 2026 7:00 am

Credit Union Closure

Multiple locations - See event detail for more information
September 8, 2026 12:00 pm

IQIM Postdoctoral and Graduate Student Seminar

East Bridge 114
September 8, 2026 12:00 pm

NSF GRFP information session [Zoom]

September 8, 2026 4:00 pm

Special Seismo Lab Seminar

South Mudd 254
September 9, 2026 11:00 am

Special ChE Seminar

Spalding Laboratory 106 (Hartley Memorial Seminar Room)
September 9, 2026 11:00 am

TIAA's Office Hours

Red Door Cafe
124

acres comprise Caltech's campus

>150

student clubs and sports organizations

16

Division III varsity teams

77°

average high temperature

Wildfires don’t all burn the same things, and that matters when it comes to what they leave behind. In a wildland–urban interface (WUI) fire, flames can consume homes, vehicles, wiring, plastics, and other manufactured materials alongside vegetation. That can leave behind contaminants, such as lead and other heavy metals, in ash, dust, and soil that may require professional testing and careful cleanup. Research following the Eaton Fire has helped inform post-fire recovery and policy. In California, lawmakers have passed a bill to establish first-in-the-nation standards and guidance for environmental testing and remediation in homes after a wildfire. Caltech geochemist François Tissot testified in support of the bill, drawing on findings from research his group conducted in the wake of the Eaton fire. The takeaway: After a WUI fire, homes left standing in the burn area still require careful assessment before reoccupation. In California, lawmakers have passed a bill to establish first-in-the-nation standards and guidance for environmental testing and remediation in homes after a wildfire. The legislation now awaits the governor’s signature. #AskCaltech
  • #AskCaltech
On May 29, 2026, a crowd of about 150 people gathered in and around a colonial-style house on campus that belongs to Caltech’s theater arts group, also known as TACIT. In one corner, visitors sat captivated by an attendee who claimed to have arrived from a future where whales have gone extinct. Another attendee said she had come from a future in which reliance on fossil fuels had been eliminated. The suspected time travelers were in fact part of Caltech’s first Time Travel Gathering, in which improvisational actors and students played futuristic characters. #Caltech #TACIT #TimeTravel #FutureOfSTEM
  • #Caltech
  • #TACIT
  • #TimeTravel
  • #FutureOfSTEM
Caltech’s Hosea Nelson is using AI and a cloud-based laboratory to investigate molecules found in nature whose 3D structures remain unknown. 🧬☁️ Molecules with unknown structures may make up the majority of natural material on Earth. Revealing those structures could open the door to new discoveries in chemistry, biology, and beyond. Nelson’s team is building a programmable cloud laboratory where scientists and AI can work together to determine molecular structures from samples. The long-term goal is to generate the massive amounts of data needed to train the next generation of AI models for chemistry. It’s part of the Genesis Mission, a national effort to use AI to accelerate scientific discovery by giving researchers entirely new ways to explore the natural world.
The next generation of exoplanet imaging technology has launched into space. 🚀 ❤️​

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