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Slowdown in plate tectonics may have led to Earth s ice sheets | Science

Share The extrusion of fresh ocean crust at midocean ridges began to slacken 15 million years ago, perhaps cooling the planet. geogphotos/Alamy Stock Photo Slowdown in plate tectonics may have led to Earth’s ice sheets Dec. 22, 2020 , 11:05 AM In seafloor trenches around the world, slabs of old ocean crust fall in slow motion into the mantle, while fresh slabs are built at midocean ridges, where magma emerges at the seams between separating tectonic plates. The engine is relentless but maybe not so steady: Beginning about 15 million years ago, in the late Miocene epoch, ocean crust production declined by one-third over 10 million years to a slow pace that pretty much continues to today, says Colleen Dalton, a geophysicist at Brown University who presented the work this month at a virtual meeting of the American Geophysical Union. “It’s a global phenomenon.”

Int l workshop on Vietnam s role in the contemporary world opens in Moscow

Int’l workshop on Vietnam’s role in the contemporary world opens in Moscow Sunday, 2020-12-20 10:08:07  Font Size:    Font Size:     |   NDO – Contemporary Vietnam has all the ability to conduct comprehensive modernisation and develop successfully and with stability, while overcoming obstacles such as corruption and acts of sabotage by hostile forces, according to delegates during a virtual scientific workshop in Moscow, Russia on December 19. The event was held by the Ho Chi Minh Institute (Saint Petersburg State University) under the theme “Vietnam’s changing role in the contemporary world: Towards the 13 th National Congress of the Communist Party of Vietnam”, and gathered the participation of prestigious scholars from Russia, Kazakhstan, Indonesia, the Democratic People’s Republic of Korea, and Vietnam.

BBC - Travel - The last speakers of ancient Sparta

By Angela Dansby 16 December 2020 As you enter the mountainous village of Pera Melana in Greece’s southern Peloponnese peninsula, you’re likely to hear the roar of scooters zooming down narrow roads and the chirps of birds stealing ripe fruit from trees. But if you approach the village’s central cafe, you’ll hear a rather unusual sound. It’s the buzz of conversations among elders in a 3,000-year-old language called Tsakonika. The speakers are the linguistic descendants of ancient Sparta, the iconic Greek city-state, and part of a rich cultural heritage and population called Tsakonian. Thomais Kounia, known as the “empress of Tsakonika” for her mastery of the language, tells her friend about the bread she baked that morning, but my Greek translator cannot understand her. Instead, Kounia translates for him in Greek, and he then tells me, like a game of Chinese whispers. I am in awe. These ladies are some of the last fluent speakers of one of the world

Russian Historian Faces 15-year Term For Butchering Lover

Text size Prosecutors in Saint Petersburg on Monday requested a 15-year jail term for a decorated Russian historian and Napoleon enthusiast accused of murdering and dismembering his young lover last year. The trial, which spurred activists to voice growing anger over domestic abuse in Russia, began in June after delays due to the coronavirus pandemic. A broadcast of the final arguments on Monday showed Oleg Sokolov, a lecturer who received France s Legion d Honneur in 2003, wearing a grey jacket and mask. He paced back and forth in a glass cell in the courtroom before the prosection requested that the judge deliver a 15-year term in a strict penal colony, an AFP journalist following the trail reported.

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