Scientists have offered new insights into the origin of diamonds in a group of stony meteorites called ureilites. These diamonds most likely formed by rapid shock transformation from graphite during one or more major impacts into the ureilite parent asteroid in the early solar system. Previously, researchers have proposed that diamonds in ureilites formed like those on Earth -- deep in the mantle of the planet, where the high pressures needed to form a diamond, are created by the weight of the overlying rock.
MTA Board of Directors Welcomes Lydia So By Stephen Chun Lydia So, a championed public servant, advocate for the AAPI community and an accomplished urban planner, designer and architect, has joined the SFMTA’s Board of Directors. She was appointed in June 2023 and sworn in by Mayor London Breed on Aug. 23, 2023, at Central Subway’s Chinatown Rose Pak Station, in line with her personal connection with the Chinatown community. So was born in Hong Kong and is fluent in Chinese (Cantonese). She is the founder of the architecture firm SOLYD Architecture, Management and Design. She is a former Historic Preservation Commissioner for the San Francisco Planning Department where she voted in favor of the Potrero Yard Modernization Project that is expected to bring hundreds of housing units to our city while maintaining the functions of the SFMTA. She was the first Chinese American Historic Preservation Commissioner, implemented the Planning Department’s Racial and Social Equity policy and
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