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Alistair Cooke looks back to the discovery of the chemical structure of deoxyribonucleic acid - slangily known as DNA.

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15 minutes

Last on

Fri 28 Feb 2003 20:45

Broadcast

  • Fri 28 Feb 2003 20:45

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Why do Americans love their flag?

Why do Americans love their flag?

How The Stars and Stripes became an emotional symbol of a nation.