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Science & Technology
What really killed the dinosaurs? (It wasn’t just the asteroid)
Lesson duration 05:26
Science & Technology
Why you don’t like the sound of your own voice - Rébecca Kleinberger
Lesson duration 12:43
Science & Technology
Why did hospitals have these frogs in their supply rooms?
Lesson duration 05:16
Science & Technology
What the fossil fuel industry doesn't want you to know - Al Gore
Lesson duration 25:45