DEBORAH AMOS, host:
Good morning. I'm Deb Amos.
Here's a back-to-school story 70 years in the making. The last time retired British army Colonel Michael Cobb picked up a college degree was in 1938. He went back this weekend to pick up the next - a Ph.D. from Cambridge. To earn the degree, Cobb put in 18 years of research to create an atlas of British train stations. At 91, he may be the oldest trainspotter in the nation and a doctor, too.
It's MORNING EDITION.
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