Hot water freezes faster than cold water

This may seem counterintuitive, but it’s called the Mpemba effect. Scientists now believe this is because the velocities of water particles have a specific disposition while they’re hot that allows them to freeze more readily. If proven correct, this finding could also be applied to everyday things, like cooling down electronic devices, according to research out of Universidad Carlos III de Madrid.
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Retail service robots

Giant Food Stores has deployed 172 service robots at its supermarkets.

The task of the bot, named Marty, is to notify customers about promotions and discounts in the store and to warn visitors in case of danger. He also improves in-store navigation and can help a lost child to find parents.

In addition, the bot can collect statistics on the best-selling products and keep track of inventory.
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Father, son, Grandfather and Great Grandfather, photo by Irving Penn, New Guinea, 1970
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Where are the most cats
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Public execution of Poles in Rożki, Masovian Voivodeship (near Radom), German-occupied Poland, 1942
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The world's largest Ferris wheel opened in Dubai

The wheel, built on an artificial island, accommodates 1,750 people at the same time. In the booths, you can have dinner, have a wedding or drink coffee at the highest point of the attraction, as the Prince of Dubai did.

It is worth such a pleasure will be 130 dirhams UAE
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Illustration of a 13th century slave market in Yemen.
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A young couple exchange wedding rings at a Victorian era wedding, 1860s
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Volcanic lightning is an electrical discharge caused by a volcanic eruption. This rare phenomenon is caused by the static electricity that is generated in the volcanic plume

Beluga whales are able to joke
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What 10,000 horsepower does to a drag tire at launch
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Hungary, June 1932: Five Alsonyek girls pose wearing stunning coloured dresses. Original autochrome colour photo by German photographer Hans Hildebrand
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