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San-Chiun Shen

Dr. San-Chiun Shen, a distinguished alumnus of the California Institute of Technology (1996), on the evening of March 26, 2021 (Beijing Time) passed away at the age of 103. Dr. San-Chiun Shen received his doctorate in biochemical genetics from Caltech in 1951. He was...
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Caltech Mourns the Passing of Professor Clarence Allen (MS ’51, PhD ’54)

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A New Mission

NASA/JPL-Caltech On February 18, 2021, NASA’s Perseverance rover landed in Jezero Crater on Mars. The team identified Jezero Crater as an ancient lakebed, illustrated here—as it may have been billions of years ago—filled with water. “The crater is one of the most...
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Fueling Research

by Marisa Demers Illustrations by Craigio Hopson Ernie Mercado spent 34 years serving flavorful Mexican street fare to a crew of Caltech customers. Yet the 71-year-old proprietor of Ernie’s Al Fresco food truck needed only a day to decide that he wanted a new title:...
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