Mr. President, Members of the Society, and Guests:

Thank you, Jay, for this wonderful citation, and let me just say that it is a tremendous honor for me to receive the MSA Award. Looking at the list of previous awardees, I am not at all confident about the extent to which I deserve this recognition. However, I thank MSA and accept this as a vote of confidence in my future work.

My very first introduction to Earth science came from Shigenori Maruyama at Tokyo Institute of Technology. His undergraduate lectures were so impressive for me to decide to study Earth’s...

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