Here are the top ten most powerful earthquakes (by the Moment magnitude scale, MMS; denoted as Mw or M) in recorded history, according to the United States Geological Survey (USGS), a scientific agency of the United States government.
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Ancient symbols carved into stone at Göbekli Tepe (an archaeological site in Turkey) tell the story of a big comet impact more than 13,000 years ago, scientists think. The devastating impact triggered a mini ice-age which drove many mammals weighing more than 40 kg to extinction.
Continue reading Ancient carvings show a comet hit Earth 13,000 years ago
In 240 BC, the Greek astronomer, geographer, mathematician, music theorist and librarian Eratosthenes of Cyrene (c. 276 BC – c. 195/194 BC) calculated the circumference of the Earth without leaving Egypt. Here’s how:
Continue reading How Eratosthenes calculated the Earth’s circumference
A woman’s face, who buried over 3,700 years ago in Northern Scotland has been reconstructed by a team of archaeologists and forensic artists led by Maya Hoole. It was the bronze-age at that time in the area.
Continue reading Ava, the bronze-age woman
There are total of 1031 UNESCO World Heritage Sites in the world (as of June 2016 – 802 Cultural, 197 Natural and 32 Mixed). Here are the top 20 countries having most number of UNESCO World Heritage sites.
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The “Seven Wonders of the World“, describes seven great constructions known in the Hellenistic period – that’s why they are also known as the “Seven Wonders of the Ancient World”. In fact, in the Hellenistic era, each famous traveler had his own version of the list, but the best known and earliest surviving was from a poem by Greek-speaking epigrammist Antipater of Sidon, which he described in a poem composed about 140 BC:
“I have set eyes on the wall of lofty Babylon on which is a road for chariots, and the statue of Zeus by the Alpheus, and the hanging gardens, and the Colossus of the Sun, and the huge labor of the high pyramids, and the vast tomb of Mausolus; but when I saw the house of Artemis that mounted to the clouds, those other marvels lost their brilliancy, and I said, ‘Lo, apart from Olympus, the Sun never looked on aught so grand.'”
But, in fact, all “seven wonders of the world“ existed at the same time for a period of less than 60 years. And now, only the Great Pyramid of Giza still in existence. All the others somehow gone.
If Antipater of Sidon was living in the more recent times, say 19th century, he probably would prepare a very different list. Here are the alternative seven wonders of the world that still exist today (with the images and videos):
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On August 6, 1945, during the World War II, an American Boeing B-29 Superfortress bomber named “Enola Gay” dropped the world’s first deployed atomic bomb codenamed “Little Boy” over the Japanese city of Hiroshima. The bomb exploded with 15 kilotons of TNT (63 TJ) of energy and caused horrendous destruction to the city. Approximately 66,000 people were killed as a direct result of the blast, and 69,000 were injured to varying degrees. Within four months, the number of the fatalities would reach 90,000–146,000 people due to the acute effects of the atomic bomb.
Continue reading What if a nuclear bomb hit your city?
The “Seven Wonders of the World”, also known as the “Seven Wonders of the Ancient World”, describes seven great constructions known in the Hellenistic period. None of them but the Great Pyramid of Giza (Kheops Pyramid) do not exist today.
Continue reading Seven Wonders of the World