Predating big discoveries

David Perlman interviews students at the Exploratorium. He was born in 1918, a decade before the discovery of penicillin. Pluto had yet to be discovered, let alone demoted.

( Peter DaSilva / For The Times )

David Perlman interviews students at the Exploratorium. He was born in 1918, a decade before the discovery of penicillin. Pluto had yet to be discovered, let alone demoted.

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