Why Portugal decriminalised all drugs
The History Hour
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The History of Space Exploration
Jenna Salk's polio vaccine has been made safely for decades, virtually eradicating a crippling disease. As the world pursues a coronavirus vaccine, are there any lessons from the tragedy of 1955? The lesson that's learned here is mass production is not the same thing as producing a vaccine in someone's laboratory like Jonah Salk's laboratory. We're turning our eyes to the heavens as we recall another key moment in the history of space exploration.
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