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00:56
Why is dry ice so dangerous? | #aumsum
8
B1 Intermediate
US
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00:59
Why do your eyes turn red in the pool? | #aumsum
8
B2 High-Intermediate
US
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01:25
Why don't we drink seawater? | #aumsum
7
B1 Intermediate
US
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01:10
Why do we get freckles? | #aumsum
7
B1 Intermediate
US
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01:55
Why does sound travel faster in summer than in…
7
B1 Intermediate
US
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01:06
How do pain relievers work? | #aumsum
7
B1 Intermediate
US
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00:59
How do straws work? | #aumsum
6
B1 Intermediate
US
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01:50
Why do stars seem higher than they actually are?…
5
B1 Intermediate
US
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