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00:51
Nervous System - Why dont we feel pain when we…
28
A2 Basic
US
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01:03
Forced Vibrations - Why does a guitar have a hollow…
18
B2 High-Intermediate
US
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01:09
Why do strawberries have seeds on the outside?…
15
B2 High-Intermediate
US
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00:51
Why do koalas hug trees? | #aumsum
56
B2 High-Intermediate
US
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00:57
Why are two thin blankets warmer than one thick…
17
A2 Basic
US
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01:03
Resonance - How does sound break glass? | #aumsum
19
B2 High-Intermediate
US
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00:55
Wavelength - Why red is used as a danger signal?…
16
B2 High-Intermediate
US
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01:37
Archimedes Principle - Why do we weigh less in…
8
B1 Intermediate
US
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01:24
How are pearls formed? | #aumsum
16
B2 High-Intermediate
US
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00:58
Why do dogs wag their tails? | #aumsum
15
B1 Intermediate
US
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01:10
What are eye floaters? | #aumsum
15
B2 High-Intermediate
US
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01:01
How does an owl fly so silently? | #aumsum
8
B2 High-Intermediate
US
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