Google honors geochemist Katsuko Saruhashi

Google is using its logo Thursday to honor a pioneer in geochemistry.

The company’s latest doodle pays tribute to Katsuko Saruhashi, born on this day 98 years ago in Japan.

Saruhashi is credited with creating a table bearing her name accurately measuring the amount of carbonic acid in water based on its temperature, pH level and chlorinity. The table has served as a critical tool for oceanographers.

Saruhashi also developed a technique to trace how radioactive fallout travels across oceans.


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