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20
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10:58
Human Eye | #aumsum
43
B2 High-Intermediate
US
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00:59
Why do your eyes turn red in the pool? | #aumsum
15
B2 High-Intermediate
US
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04:38
Density - Why does oil float on water? | #aumsum
17
B2 High-Intermediate
US
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05:40
Why do some people Sweat more than others? | #aumsum
12
B2 High-Intermediate
US
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06:38
Why is it hard to Cure HIV / AIDS? | #aumsum
7
B1 Intermediate
US
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01:34
Why do we blush? | #aumsum
19
B1 Intermediate
US
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06:31
Is Sugar bad for you? | #aumsum
22
B2 High-Intermediate
US
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07:15
Greenhouse Effect for Kids | #aumsum
24
B1 Intermediate
US
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05:23
How does a Spider make its web? | #aumsum
22
B2 High-Intermediate
US
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05:59
Do Bees Dance? | #aumsum
24
B1 Intermediate
US
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01:14
Do you hear "Yanny" or "Laurel"?…
15
B2 High-Intermediate
US
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07:00
How do Stars form? | #aumsum
7
B1 Intermediate
US
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