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00:58
Why do people grind their teeth? | #aumsum
11
B2 High-Intermediate
US
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01:14
Do you hear "Yanny" or "Laurel"?…
11
B2 High-Intermediate
US
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01:45
Why does a match light when you strike it? | #aumsum
10
B2 High-Intermediate
US
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02:09
Diffusion - Why can we smell hot food from a distance?…
10
B2 High-Intermediate
US
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00:56
How do fish breathe underwater? | #aumsum
10
B1 Intermediate
US
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01:10
What is color blindness? | #aumsum
9
B1 Intermediate
US
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01:04
What is a mirage? | #aumsum
9
B1 Intermediate
US
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01:06
What is a tardigrade? | #aumsum
9
B1 Intermediate
US
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01:37
Archimedes Principle - Why do we weigh less in…
8
B1 Intermediate
US
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01:01
How does an owl fly so silently? | #aumsum
8
B2 High-Intermediate
US
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01:26
Why is soap ineffective in hard water? | #aumsum
8
B2 High-Intermediate
US
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01:10
Is Antibacterial soap bad for you? | #aumsum
8
B2 High-Intermediate
US
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