When she was at graduate school in the 1970s, Dr. Katalin Kariko learned about something that would become a career-defining obsession: mRNA.

She believed in the potential of the molecule, but for decades ran up against institutional roadblocks. Then, the coronavirus hit and her obsession would help shield millions from a once-in-a-century pandemic.

Today, a conversation with Dr. Kariko about her journey.

Guest: Gina Kolata, a reporter covering science and medicine for The New York Times.

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Background reading:

Collaborating with devoted colleagues, Dr. Kariko laid the groundwork for the mRNA vaccines turning the tide of the pandemic.

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