John O. Dabiri (PhD '05), Caltech's Centennial Professor of Aeronautics and Mechanical Engineering, and Joseph Lazio, a visiting associate in astronomy, have been named 2025 fellows of the American Association for the Advancement of Science (AAAS), one of the world's largest general scientific societies and publisher of the Science family of journals.According to the AAAS citation, Dabiri is […]

Earthquakes occur when the tectonic plates of the earth's crust shift, jolting past each other in a release of built-up tension. However, other natural forces can also influence seismic activity: Hydrological dynamics, like changes in groundwater and snowpacks, in particular, put pressure on faults. A new study from Caltech finds that a higher rate of […]

Caltech scientists have developed a new way to produce optical frequency combs—important tools in devices that keep time and measure distances very precisely—at the chip scale, an advance that should make it easier to incorporate such combs in optical devices and more practical to use them outside the laboratory. To generate the combs, the new […]

On Thursday, March 12, Caltech released its final round of undergraduate admissions decisions, offering admission to 428 exceptional students.Hailing from 43 US states and 23 countries around the globe, this year's admitted students bring exceptional academic achievement, endless curiosity for discovery, and a wide range of perspectives shaped by their diverse backgrounds. The class also […]

A new Caltech study indicates that drought increases the abundances of antibiotic-resistant microorganisms in soils, which directly correlates with an increase in antibiotic-resistant infections in hospitals. In other words, regions experiencing high aridity—hotter, drier regions—also experience higher levels of antibiotic-resistant infections. The work demonstrates the interconnectedness of climate, environment, and human health.The study was led […]

Like the males of many animal species, male Drosophila melanogaster fruit flies, a commonly studied lab animal, are aggressive toward one another and even fight when competing for resources such as food and females. Researchers in the lab of David Anderson have been studying aggression in these insects for decades, elucidating the neural basis for […]

Brown dwarfs get a bad rap in the stellar world, often labeled as "failed stars" for their inability to sustain nuclear fusion at their cores. The mass of these objects falls between planets and stars, ranging from 13 to 80 times the mass of Jupiter. Because they aren't massive enough to sustain fusion, they are […]

Yuk L. Yung, professor of planetary science and Jet Propulsion Laboratory (JPL) senior research scientist, passed away on March 16, 2026, after a brief illness. He was 79."Yuk loved Caltech, JPL, and his many close colleagues, and it showed in the many ways he shared his scientific passion and understanding of this life we lead […]

Scientists at Caltech have figured out how to precisely engineer tiny three-dimensional (3D) metallic pieces with nanoscale dimensions. The process can work with any metal or metal alloy and yields components of surprising strength despite having a porous and defect-ridden microstructure, making it potentially useful in a wide range of applications, including medical devices, computer […]

Cheers echoed through Caltech's Scott Brown Gym as a 20-pound student-built robot powered its way up a steel-plated pyramid and crested the summit. Moments later, the machine accurately deposited its payload of pellets, drawing another round of applause from the crowd gathered for the 41st annual ME 72 Engineering Design Competition.Every year, third- and fourth-year […]