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40,619 published items in this category and its subcategories.

The cause of wind, tide and sea currents
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The cause of wind, tide and sea currents

Wind, tides and sea currents are all natural phenomena commonly seen on Earth. But where do they come from, not everyone knows, everyone remembers.

December 18, 2018
Why silver hair back?
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Why silver hair back?

Why does our hair get silvery? It is said that when we are old, we have gray hair, but many people are young and still have gray hair. So what are the factors that make…

December 18, 2018
The turquoise river fooled scientists
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The turquoise river fooled scientists

The Rio Celeste River in Costa Rica has caused scientists to mistake the beautiful turquoise color of water for many years due to the chemical reaction created.

December 18, 2018
The reason inside the plane is always cold
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The reason inside the plane is always cold

It doesn't matter which time of year or the climate of the destination you're flying to, the interior of the plane is always as cold as winter.

December 18, 2018
Legend of bad luck brought by black cats
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Legend of bad luck brought by black cats

Everyone says that when a black cat runs through the path you are going, the risk will definitely happen. But have you ever wondered how black cats got so badly known? I…

December 18, 2018