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What Kind Of 'Overhead Projector' Costs $3 Million?

John McCain has frequently criticized Barack Obama for a $3 million earmark for an "overhead projector" for a planetarium in Chicago. Paul Knappenberger, president of Chicago's Adler Planetarium, explains why this projector isn't just an everyday piece of classroom AV equipment.

The projector, which ultimately did not receive federal funding, would have been an update to the Adler Planetarium's 40-year old projector.

Guests:

Paul Knappenberfer, president of the Adler Planetarium and Astronomy Museum

James Sweitzer, principal at Science Communications Consultants

Copyright 2023 NPR. To see more, visit https://www.npr.org.

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