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Strange rays of light on Earth
Holy fire, green flashing or lightning, are strange light streams that scientists are still trying to explain.
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Discover surprising science, unexplained phenomena, materials, history, nature and fascinating facts that reveal how the world works.
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Articles & explainers
40,619 published items in this category and its subcategories.
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How to tie the shoelaces tight: the mystery still has no solution
When more and more buttons are tied, the shoelace is easier to slip, not everyone understands why.
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60 years ago how big 5MB hard drive?
In September 1956, IBM released 305 RAMAC, the first supercomputer to have a hard drive (HDD). This hard drive weighs more than 1 ton and stores 5MB of data.
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Aircraft flying as high as secure?
Currently, large aircraft often have to fly at altitudes above 10,000m. Why fly so high? Low flying is not safer or what?
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Why are TV advertisements played back and forth many times?
Why businesses must constantly advertise, while the message of transmission seems not
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The mystery of the human face
Scientists believe they understand exactly how we perceive a face when we see it. Experts already know that there is something special about people who attract us to loo…
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Decoding the cause of flooded water turning green in Hanoi
Noting information about the situation of flooded water in the lane 87 Tam Trinh is unusually green, police went to the scene to find out and clarify the cause.
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Why are all old villas painted yellow?
Do you realize that most of the old buildings in Hanoi are painted yellow?
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Preventing accidents when using electrical equipment during the rainy season
Rain, flooding potential risks of leakage and electric shortages if users do not pay attention and properly handle electrical appliances in the family.
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How to become an astronaut?
Many of the practitioners cannot fly even once. They parted forever.
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The discoveries you know?
Have you ever wondered what is the driest place in the world or how to put a pear in a bottle? The results of recent scientific discoveries will help us better understan…
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4 ideal tourist destinations for 2016
Cuba, Jamaica, Kauai and Riviera Nayarit are 4 ideal tourist destinations for you next year holiday.
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Quiz you distinguish 3-to-no-finger toes anyone has
Did you know that most of us have trouble distinguishing 3 middle toes?
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7 biggest monsters of all time
We all know about the size of dinosaurs, but how do you feel when you see a large cow-sized rat, or sea scorpion bigger than a human, a toad is as big as a big ball to p…
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The truth about the origin of vampires
Vampires are legendary creatures, maintaining their own lives by sucking on the blood of living things. Vampires are recognized in many different cultures, from prehisto…