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Tech Time Machine: 20 April

Milk that lasts! Movies with talking actors! What will they think of next?

Now playing: Watch this: Tech Time Machine: 20th April
1:04

Milk that lasts! Movies with talking actors! What will they think of next?

We're not entirely sure, to be honest, but we look into pasteurisation and Vitaphone's attempt to kill off the silent movie era on this episode of Tech Time Machine.