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00:51
Nervous System - Why dont we feel pain when we…
34
A2 Basic
US
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05:16
Life Cycle of a Butterfly | #aumsum
76
B2 High-Intermediate
US
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01:22
Why can't you use phones on planes? | #aumsum
86
B1 Intermediate
US
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25:32
How does a plastic comb attract paper? plus 10…
27
B1 Intermediate
US
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01:03
Taste Buds - Why mint tastes cold? | #aumsum
14
B2 High-Intermediate
US
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05:43
Solution, Suspension and Colloid | #aumsum
17
B2 High-Intermediate
US
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01:01
Why do animals eyes glow in the dark? | #aumsum
29
B2 High-Intermediate
US
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01:01
Why does rain smell? | #aumsum
39
B1 Intermediate
US
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05:28
Electrolytic Refining of Metals | #aumsum
8
B2 High-Intermediate
US
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03:11
Soil Formation for Kids | #aumsum
17
B1 Intermediate
US
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01:20
Why do we have different time zones? | #aumsum
31
B1 Intermediate
US
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01:03
Forced Vibrations - Why does a guitar have a hollow…
21
B2 High-Intermediate
US
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