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The Conversation: Addressing local environmental issues; History of Jonas Salk and his polio vaccine

jonas salk polio vaccine 1954
ASSOCIATED PRESS
/
AP
Dr. Jonas Salk, the Pittsburgh scientist who discovered the Polio vaccine, administers an injection to an unidentified boy at Arsenal Elementary School in Pittsburgh, Pa., Feb. 23, 1954. (AP Photo)
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Catherine Cruz is the host of The Conversation. Originally from Guam, she spent more than 30 years at KITV, covering beats from government to education. Contact her at ccruz@hawaiipublicradio.org.
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