Geologists and archaeologists say that the stone was made by heating silt from the Tigris and Euphrates rivers to melting temperatures and then slowly cooling it “to produce rock - hard slab resembling a type of volcanic rock called basalt, ” reports The New York Times. There was a shortage of raw building materials in the area, so synthetic basalt “appears to have been manufactured in some quantity as a substitute for the natural basalt. ” The man - made stone was used to build Mashkan - shapir some 4,000 years ago. Precautions While Cooking
ამ მოუხელთებელმა ნაწილაკებმა ახლახანს საერთაშორისო ყურადღება მიიპყრო, რადგან იაპონიის ქალაქ ტაკაიამაში მეცნიერებმა განაცხადეს, რომ ნეიტრინოს მასა ჰქონია.