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Why are these balls when immersed in water completely invisible?
Same water, but these water marbles are invisible in the water, while ice is not, why?
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Video: The largest planet snail weighs nearly 5kg
An American animal expert found a huge, slippery, black slug in a coastal lagoon in Los Angeles, California, USA.
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Video: Mysterious giant UFO flashes across Malaysia sky?
The clip is stirring up the online community about a giant UFO image passing through the sky of Malaysia.
Videos
Video: Red-tailed falcon rushes to attack unmanned aircraft
A man in Florida, USA, recorded the scene of the falcon suddenly rushing over and knocking down the unmanned aircraft in the blink of an eye.
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Video: Operation of a 2-stroke engine when viewed through the transparent cylinder cover
Looking through it, we can see clearly that the 2-stroke engine is igniting, igniting the fuel with sounds, the scenery is quite beautiful and impressive.
Videos
Video: Development history of the racing helmet
Look back at the development history of the racing helmet from the early days when they were made of leather.
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Video: Tilapia decides to go out to find a way home
The perch tried his best to crawl through the gravel ground, then struggled through the grass to reach the pond on the other side.
Videos
Video: 4m long shark angry at fishing boat engine
The white shark circled around the fishing vessel and bit into the engine, causing the fishermen on board the Australian waters to be terrified.
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Video: Liquid solidified immediately when punched
Toothpaste, tomato sauce, paint and blood are non Newtonian fluids, which are able to solidify immediately at the place of sudden impact.
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Video: The reason soap bubbles don't break when poked by hand
Soap bubbles are usually spherical because water molecules often exist in the smallest form of surface area, according to Seeker.
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Tangram Smart Rope: Smart jump rope, integrated LED ring counting
Have you ever been dancing rope but naturally forgot how many jumps you got to the round?
Videos
Video: See for yourself the cancer cells spread throughout the body
Cancer cells appear to depend on a strange survival mechanism to spread throughout the body, this is the result of a newly published study.
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Video: A rare moment when a newborn baby is born in the amniotic membrane
The phenomenon of babies born while still inside intact membranes only occurs in one of 80,000 births.
Videos
Video: The red glowing ball is suspected to be UFO in France
A couple in Paris recorded a large spherical object glowing red, appearing in the sky a few seconds and then disappearing.