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  • #52 – Why do planes leave behind a white trail in the sky?

#52 – Why do planes leave behind a white trail in the sky?

$70.47 $126.85
Why do tigers have stripes on their body? Why are magnifying glasses able to enlarge images of objects? Why should we not eat crabs with persimmons? Why… Why this? Why that? There are many questions one can easily ask but hard to get the right answers. Come to think of it, there are many scientific mysteries hidden in our everyday life.
Happy Dragon

Happy Dragon

  • #49 – Why are grape vines able to climb?
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  • #48 – Why are daffodils able to grow without soil?
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  • #59 – Why do pufferfish inflate into a ball?
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  • #25 – Why do cut apples turn brown?
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  • #44 – Why do firecrackers produce loud noises?
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  • #58 – Why do sharks not sink even without a swim bladder?
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  • #57 – Why are some injections given in the arm?
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  • #35 – Why do volcanoes erupt?
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  • #56 – Why are octopuses able to squeeze through a small hole?
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  • #47 – Why should we not pick a rabbit up by its ears?
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  • #51 – Why are bees able to identify their hives?
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  • #52 – Why do planes leave behind a white trail in the sky?
    $70.47 $126.85
  • #46 – Why are monkeys able to eat fast?
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  • #23 – Why is there a rustling sound when we undress?
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  • #50 – Why is an owl able to fly silently?
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  • #42 – Why do electric rays produce electricity?
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