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

Why are there ants in the house?
Biology

Why are there ants in the house?

It's almost impossible to count exactly how many ants are on this Earth, but the estimate is about 10 billion billion.

March 18, 2020
Why is Lavabo's drainage pipe curved?
Discover science

Why is Lavabo's drainage pipe curved?

If you pay attention, you will see that the lavabo drainage pipe has a curved shape, the first part bends down and then goes upwards, what purpose does it do?

March 16, 2020
Why do clothes darken when wet?
Discover science

Why do clothes darken when wet?

Clothes and fabrics become darker when wet because there is less light reflected from the material toward the user.

March 16, 2020
Squatting posture is beneficial for health?
Discover science

Squatting posture is beneficial for health?

American scientists studying African hunter-gatherers have come to the conclusion that squatting or kneeling is more beneficial to health than sitting on a chair or sofa.

March 16, 2020