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Small chemical toys
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When you want to act with your buddies, you may make a phone call and have a small meeting, while they choose: sneeze
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Have you ever observed the foam in the sink and in the coffee cup?
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Maybe, maybe, I drove a car.
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The "endogenous clock" in our bodies is close to 24 hours per cycle-- but these spiders are completely different.
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Space is a suitable place for physical experiments and demonstrations, but some demonstrations are really mysterious.
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No, you can't wait.
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A scallop has eyes, and it has a delicate mirror.
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When I only have this kind of picture to play, you should know that it is not easy.
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If you like animals, this cartoon is worth seeing.