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05:23
Why do Dead Whales Explode? | #aumsum
7
B2 High-Intermediate
US
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07:00
How do Stars form? | #aumsum
7
B1 Intermediate
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07:58
Does it Rain Diamonds on Jupiter and Saturn? |…
7
B2 High-Intermediate
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05:28
Electrolytic Refining of Metals | #aumsum
6
B2 High-Intermediate
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06:11
Covalent Bonding | #aumsum
6
B2 High-Intermediate
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05:53
Magnetic Field | #aumsum
6
B2 High-Intermediate
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06:15
Layers of Soil for Kids | #aumsum
6
B2 High-Intermediate
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06:13
How do Microwave Ovens work? | #aumsum
6
B1 Intermediate
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06:38
Why is it hard to Cure HIV / AIDS? | #aumsum
6
B1 Intermediate
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08:08
Can we Taste Food without Saliva? | #aumsum
6
B2 High-Intermediate
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06:04
What exactly killed the Dinosaurs? | #aumsum
6
B2 High-Intermediate
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07:01
Square Root Tricks | #aumsum
5
B1 Intermediate
US
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