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04:14 Environmental Science The science behind a climate headline - Rachel Pike Lesson duration 04:14 Manage Library 24,569 Views
19:10 Physical Science String theory - Brian Greene Lesson duration 19:10 Manage Library 6,784,421 Views
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07:32 Nature of Science How simple ideas lead to scientific discoveries Lesson duration 07:32 Manage Library 3,069,917 Views
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