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Javier E

What is a supervolcano, and could it wipe out humanity? - The Washington Post - 0 views

  • It’s also dubbed a “supervolcano” — a rare but unofficial label given to those that have produced the most intense eruptions in Earth’s history. Camp Flegrei’s super outburst occurred around 39,000 years ago (determined through rock records) and spewed gases and nearly a trillion gallons of molten rock, blocking sunlight and triggering intense cooling
  • The most recent eruption, much smaller, occurred in 1538 and created a roughly 120-meter-tall mound.
  • recent months of earthquake activity at Campi Flegrei — more than 2,500 earthquakes as intense as a 4.3-magnitude since September — has stirred concerns that the volcano could super-strike again soon.
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  • But researchers say that’s not how supervolcanoes work and cast doubts for a prophetic outburst.
  • “When a volcano is called a supervolcano, what we really mean is it had a super eruption once, at least, in the past,”
  • The last V8 eruption occurred around 27,000 years ago in Taupo, New Zealand.
  • Scientists can’t see what is stirring below the surface of Campi Flegrei with their naked eyes, but Kilburn said the recent activity could be underground molten rock and fluids readjusting themselves. Those movements appear as earthquakes on the surface.
  • Out of more than 1,000 known volcanoes in the world, only about 20 are supposedly supervolcanoes. Technically, they are defined as those that register the highest on the volcanic explosivity index, which runs from V1 (nonexplosive) to V8 (colossal eruption
  • “But that doesn’t mean that it’s going to have other super eruptions in the future. … Very, very, very large eruptions are much, much rarer.”
  • Such a super eruption ejects a volume of around 1,000-cubic kilometers or more — about a thousand times bigger than Mount St. Helens (V5), which caused mudslides, fires, floods and more than 50 deaths in 1980.
  • Yellowstone, one of the world’s most famous supervolcanoes, measures 30 by 45 miles and welcomes millions of tourists to its park. Its largest eruption occurred 2.1 million years ago, ejecting more than 2,400 cubic kilometers of material. Like many caldera systems, the majority of Yellowstone’s eruptions have since been much smaller.
  • Supervolcano is “a made-up word,” said volcanologist Michael Poland, scientist in charge at the Yellowstone Volcano Observatory. “I think it’s misleading. I think it’s misapplied. I can’t stand that term. I wish it would go into the dustbin, but it’s too sexy.”
  • It implies an apocalyptic-like explosion, but no volcanic eruption has caused a mass extinction to our knowledge
  • The largest volcanic explosion in the geologic record is thought to have occurred in Toba, Indonesia, around 74,000 years ago, registering a V8 on the volcanic explosivity index. S
  • scientists initially speculated that the eruption almost wiped out humanity because populations declined shortly after, but archaeological evidence showed Homo sapiens farther away were thriving after the eruption.
  • “No explosive volcanic eruption that we know of has ever been associated with a mass extinction of plant or animal life,” said Poland, who’s also a scientist at the U.S. Geological Survey (USGS). “That’s not to say it wouldn’t be devastating or hard to live.”
Javier E

The Roman Republic Was Teetering. Then a Volcano Erupted 6,000 Miles Away. - The New Yo... - 0 views

  • a volcanic eruption in the remote Aleutian Islands, 6,000 miles away from the Italian peninsula, contributed to the demise of the Roman Republic. That eruption — and others before it and since — played a role in changing the course of history.
  • At the Desert Research Institute in Reno, Nev., it’s not unusual to find researchers in puffy parkas and wool hats handling chunks of ice in a minus 4 Fahrenheit “cold room.” Ice cores, typically drilled vertically from glaciers, hide bits of volcanic material that rained down from long-ago eruptions within their layers.
  • Joseph McConnell, a climate scientist at the institute, and his collaborators are in the business of looking for that debris. Using an instrument they designed and built, they melt the ice and pipe the water into an array of sensors. With hundreds of feet of tubing, the setup looks downright chaotic, but it’s exquisitely sensitive. The sensors pinpoint many substances, including about 30 different elements, and they do so by catching just tiny whiffs.“They have sensitivities of parts per quadrillion,” Dr. McConnell said.
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  • Volcanic ash, more generally known as tephra, sometimes hides in ice. It’s a special find because it can be geochemically tied to a specific volcano. “The tephra comes from the magma itself,
  • Sulfur is also indicative of a past eruption. Sulfur dioxide, a gas commonly belched by erupting volcanoes, reacts with water in the atmosphere to create sulfate aerosols. These tiny particles can linger in the stratosphere for years, riding wind currents, but they, like tephra, eventually fall back to Earth.
  • The ice also carries a time stamp. Dr. McConnell and his colleagues look for variations in elements like sodium, which is found in sea spray that’s seasonally blown inland. By simply counting annual variations in these elements, it’s possible to trace the passage of time, Dr. McConnell said. “It’s like a tree-ring record.”
  • In layers of ice corresponding to the early months of 43 B.C., they spotted large upticks in sulfur and, crucially, bits of material that were probably tephra. The timing caught the scientists’ attention.
  • Researchers have previously hypothesized that an environmental trigger may have helped set in motion the crop failures, famines and social unrest that plagued the Mediterranean region at that time. But until now, “There hasn’t been the kind of data that these scholars brought forth to really get those theories into the mainstream,”
  • The match was spot on, Dr. Plunkett said. “There are some events that are tricky. With Okmok, there’s nothing else that looks like it.”
  • This eruption was one of the largest of the last few millenniums, Dr. McConnell and his collaborators concluded, and the sulfate aerosols it created remained in the stratosphere for several years. These tiny particles are particularly good at reflecting sunlight, which means they can temporarily alter Earth’s climate.
  • “They’ve created, for a short term, global cooling events,”
  • Using climate models to simulate the impact of an Okmok eruption, Dr. McConnell and his collaborators estimated that parts of the Mediterranean, roughly 6,000 miles away, would have cooled by as much as 13.3 degrees Fahrenheit.
  • Rain patterns changed as well — some regions would have been drenched by 400 percent more precipitation than normal, the modeling revealed.
  • That climate shock came at precisely the wrong time, Dr. Clark said. “This was a period of Mediterranean-wide political, social and economic upheaval.”
  • Historical records compiled by Roman writers and philosophers note food shortages and famines. In 43 B.C., Mark Antony, the Roman military leader, and his army had to subsist on wild fruit, roots, bark and “animals never tasted before,” the philosopher Plutarch wrote.
  • For a society already reeling from the assassination of Julius Caesar the year before, such trying conditions might have exacerbated social unrest, the researchers concluded. They might even have kick-started transfers of political power that led to the rise of the Roman Empire.
  • “It’s an incredible coincidence that it happened exactly in the waning years of the Roman Republic when things were falling apart,”
  • The links in the study are probable, but not definite. “They’re not being heavy handed and saying this is absolutely it,” Dr. Holmberg said.
  • Egyptian society, before the installation of the Aswan Low Dam in the early 20th century, was anchored by the annual summer flooding of the Nile River. These summer floods, sustained by monsoon rains in the highlands of Ethiopia, delivered irrigation and silt, both critical to Egypt’s agrarian society. “The whole rhythm of the year was built around responding to the flood,” Dr. Manning of Yale said.
  • But volcanic eruptions, even those on the other side of the world, could have disrupted that flooding, Dr. Manning and his colleagues recently showed. Using records from Cairo’s Nilometer — an octagonal marble column that was used for recording Nile flood height from 622 to 1902 A.D., the team found that flooding tended to be weaker, or entirely absent, during years when there was a large volcanic eruption somewhere in the world.
  • he culprit, the team reasoned in a paper published a few years ago, was cooling caused by sulfate aerosols. When Earth cools after a large eruption, its atmospheric circulation patterns change. That can shift the invisible meeting point of Northern and Southern Hemisphere trade winds — the Intertropical Convergence Zone — that affects where monsoon rains tend to fall. When less precipitation falls over Ethiopia, home to a major tributary of the Nile, there’s less water available for flooding that year.
  • Ptolemaic-era records revealed that this reduced flooding had socioeconomic and political consequences. Revolts increased in the years following “Nile failure,” Dr. Manning and his colleagues found. Priestly decrees — intended to establish the political legitimacy of Greek rulers — also became more commonplace.
  • “There are still large unsourced mystery eruptions up until the early 19th century.”
  • Right now, roughly a dozen volcanoes are erupting. In all likelihood, they’re nothing to worry about — it’s doubtful you’ve even heard of them. But every once in a while, there’s bound to be a really big eruption. How its effects ripple around the world awaits to be seen.
anonymous

Volcano Erupts In Southwestern Iceland After Thousands Of Earthquakes : NPR - 0 views

  • A volcano on the Reykjanes Peninsula in southwest Iceland erupted Friday evening, producing a river of lava that could be seen from the capital, Reykjavik, 20 miles away.
  • The eruption was reported by the Icelandic Meteorological Office. Photos of the event show an ominous sky glowing red with the silhouette of Fagradalsfjall Mountain below.The eruption took place about three miles inland from the coast and poses little threat to residents. They were advised to stay indoors with windows closed against any gases that are released.
  • This is the first eruption in the Reykjanes Peninsula in nearly 800 years,
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  • Thousands of earthquakes took place in the weeks leading up to the eruption,
  • Earlier this week, swarms of earthquakes rattled the peninsula, with over 3,000 quakes on Sunday alone. The strongest tremors took place around Fagradalsfjall Mountain.
  • Scientists attributed the earthquakes to magma intrusions, molten rock movement about a kilometer below the earth's crust. Meteorological officials first mentioned the possibility of an eruption on March 3,
  • The chances of an eruption escalated in recent days as magma flows concentrated around the southern portion of Mt. Fagradalsfjall
  • Scientists declared the mountain the most likely point should an eruption take place. Seismic activity on the peninsula decreased Friday before the mountain ultimately erupted.
  • It is not expected to cause havoc in air travel as did ash from the Eyjafjallajökull eruption in 2010.
anonymous

Lava Flows Again As Indonesian Volcano Erupts : NPR - 0 views

  • Indonesian officials are monitoring the country's most active volcano after it erupted again Saturday morning, launching hot ash clouds high into the air, and sending lava spewing down the side of the mountain.
  • Ash plumes shot more than 600 feet into the air as volcanic debris spilled down the slopes of Mount Merapi in Yogyakarta on the densely populated Indonesian island of Java, about 250 miles east of Jakarta. The name "Merapi" loosely translates to "Mountain of Fire."
  • The volcano erupted hot clouds of ash at least eight times, and sent several pyroclastic flows down its slopes, according to the Indonesia's Center for Volcanology and Geological Hazard Mitigation. No injuries were reported, but local officials are cautioning of more activity to come. The volcano has erupted regularly for hundreds of years.
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  • But the more cataclysmic "explosive" eruptions are still likely, Jati said, with the potential for erupting volcanic material up to about 2 miles from the summit. Lava avalanches and hot clouds could reach more than 3 miles to the southwest.
  • Based on observations of the volcano begun in early November, "it is concluded that the volcanic activity of Mount Merapi is still quite high in the form of effusive eruptions," said Raditya Jati of the Indonesian National Board for Disaster Management. "Effusive" eruptions are those in which lava steadily flows onto the ground.
  • Mining companies have been advised to temporarily suspend work in the river that originates at Mount Merapi, and tourism companies have been asked to temporarily stay away from "areas of potential danger and crater openings" up to 3 miles away.
criscimagnael

Underwater Volcano Erupts, Setting Off Tsunami Warnings Across Pacific - The New York T... - 0 views

  • An underwater volcano erupted on Saturday near the remote Pacific nation of Tonga, triggering tsunami warnings across the Pacific and for the West Coast of the United States, and causing strong waves and currents in many coastal areas.
  • A four-foot tsunami wave was reported to have hit Tonga’s capital, Nuku’alofa, sending people rushing to higher ground, and witnesses said ash had fallen from the sky. There were no immediate official reports on the extent of injuries or damages, but internet service in the country was disrupted, according to The Associated Press, making it difficult to assess.
  • Despite Tonga’s geographical isolation, a booming sound after the initial eruption was heard as far away as New Zealand, 1,100 miles northeast of the archipelago’s main island of Tongatapu.
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  • officials urged residents of coastal areas in much of the West Coast, Alaska and Hawaii to stay away from the coastline and move to higher ground. The National Weather Service in Portland, Ore., reported possible one- to three-foot waves in some areas of Oregon and Washington.
  • In California, water surged into Santa Cruz Harbor on Saturday morning, damaging boats, submerging the parking lot and causing people to evacuate the docks, sidewalks and nearby stores
  • In the Bay Area, the National Weather Service said tsunami surges of up to a few feet could arrive in “pulses” throughout the day, and warned residents not to try to identify their arrival.
  • Jaclyn Rothenberg, a spokeswoman for the Federal Emergency Management Agency, said the agency did not expect damages from the tsunami, and stressed the importance of disaster preparedness.
  • She added that the agency had coordinated with its partners in American Samoa and Hawaii, which had “no impacts from this event.”
  • Across the Pacific warnings were sounded. New Zealand’s National Emergency Management Agency advised people in coastal areas to expect “strong and unusual currents and unpredictable surges at the shore.” And on their Facebook pages, the meteorological services for Fiji and Samoa also issued alerts, advising people to stay away from low-lying coastal areas.
  • The volcano, Hunga Tonga-Hunga Ha’apai, which is about 40 miles north of Tongatapu, had been relatively inactive for several years. It began erupting intermittently in December but by Jan. 3 the activity had decreased significantly, according to a report by the Smithsonian Institution’s Global Volcanism Program.
  • Satellite imagery of the eruption on Saturday, shared on Twitter by New Zealand’s National Institute of Water and Atmospheric Research, showed a “brief spike in air pressure as the atmospheric shock wave pulsed across New Zealand.”
  • The V.E.I. of the eruption Saturday has not been estimated yet, but before the eruption, the volcano was estimated to be able to produce an eruption with a maximum V.E.I. of 2.
lilyrashkind

Pacific tsunami threat recedes, volcano ash hinders response - ABC News - 0 views

  • WELLINGTON, New Zealand -- The tsunami threat around the Pacific from a huge undersea volcanic eruption receded Sunday, but the massive ash cloud covering the tiny island nation of Tonga prevented surveillance flights from New Zealand to assess the extent of damage.
  • In Tonga it sent tsunami waves crashing across the shore and people rushing to higher ground.
  • The eruption cut the internet to Tonga, leaving friends and family members around the world anxiously trying to get in touch to figure out if there were any injuries. Even government websites and other official sources remained without updates on Sunday afternoon.
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  • islands.“Communication with Tonga remains very limited. And I know that is causing a huge amount of anxiety for the Tongan community here,” Ardern said.
  • water a vital need.Aid agencies said thick ash and smoke had prompted authorities to ask people to wear masks and drink bottled water.
  • Tsunami advisories were earlier issued for Japan, Hawaii, Alaska and the U.S. Pacific coast. The U.S. Geological Survey estimated the eruption caused the equivalent of a magnitude 5.8 earthquake. Scientists said tsunamis generated by volcanoes rather than earthquakes are relatively rare.
  • “It’s really bad. They told us to stay indoors and cover our doors and windows because it’s dangerous,” she said. “I felt sorry for the people. Everyone just froze when the explosion happened. We rushed home.” Outside the house, people were seen carrying umbrellas for protection.
  • One complicating factor to any international aid effort is that Tonga has so far managed to avoid any outbreaks of COVID-19. Ardern said New Zealand's military staff were all fully vaccinated and willing to follow any protocols established by Tonga.
  • In a video posted on Facebook, Nightingale Filihia was sheltering at her family's home from a rain of volcanic ash and tiny pieces of rock that turned the sky pitch black.
  • The tsunami waves caused damage to boats as far away as New Zealand and Santa Cruz, California, but did not appear to cause any widespread damage. Snider said he anticipated the tsunami situation in the U.S. and elsewhere to continue improving.
  • “We are praying that the damage is just to infrastructure and people were able to get to higher land,” she said.U.S. Secretary of State Antony Blinken wrote on Twitter he is “deeply concerned for the people of Tonga as they recover from the aftermath of a volcanic eruption and tsunami. The United States stands prepared to provide support to our Pacific neighbors.”
  • On Tonga, which is home to about 105,000 people, video posted to social media showed large waves washing ashore in coastal areas and swirling around homes, a church and other buildings. A Twitter user identified as Dr. Faka’iloatonga Taumoefolau posted video showing waves crashing ashore
  • The explosion of the Hunga Tonga Hunga Ha’apai volcano, about 64 kilometers (40 miles) north of Nuku’alofa, was the latest in a series of dramatic eruptions. In late 2014 and early 2015, eruptions created a small new island and disrupted international air travel to the Pacific archipelago for several days.
  • “The surface area of the island appears to have expanded by nearly 45% due to ashfall,” Planet Labs said days before the latest activity.
  • Savannah Peterson watched in shock as the water rose several feet in a matter of minutes in front of her oceanfront house in Pacifica, California, just south of San Francisco.
  • In northern Peru's Lambayeque region, two women drowned after being swept away by ″abnormal waves″ following the eruption, authorities said. A dozen restaurants and a coastal street were also flooded along El Chaco beach in Paracas district.
Javier E

Mega-eruptions Caused Mass Extinction, Study Finds - 0 views

  • In a new study published today in the journal Science, researchers say they have confirmed that eruptions large enough to bury the U.S. under 300 feet (91 meters) of lava occurred at the same time that vast numbers of plant and animal species disappeared from the fossil record. About 201 million years ago, tectonic forces started ripping the supercontinent known as Pangaea apart, said Terrence Blackburn, a geologist at the Carnegie Institution for Science in Washington, D.C., and lead author of the study. The underlying mantle rock melted, generating these large eruptions, he added. The rift, which eventually created the Atlantic Ocean basin, happened between sections of Pangaea that would go on to become North America and Africa. (Read about how Pangaea formed.)
  • by using a rare mineral called zircon, found in igneous rocks like basalts, the researchers were able to narrow down their margin of error to 20,000 to 30,000 years—pegging the initial eruptions to just before the mass extinction event. “Zircon is a perfect time capsule for dating those rocks,” said Blackburn. When the mineral crystallizes, it incorporates uranium, which decays over a known time with respect to the element lead. By measuring the ratio of uranium to lead in our samples, we can determine the age of those crystals, he explained.
  • There is evidence that the initial volcanic eruptions doubled the amount of the carbon dioxide in the atmosphere, which led to increased global temperatures and ocean acidification, he noted. This happened quickly, which probably didn’t give organisms at the time much of a chance to adjust to the changes.
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  • There is one case 65 million years ago, at a point in time known as the Cretaceous-Tertiary boundary (K-T boundary), with strong evidence supporting an asteroid impact around the same time the dinosaurs disappeared.
  • “That one instance really guided everybody’s thinking, and the idea that impacts caused mass extinctions was really, really popular,” said Renne, who wasn’t involved in the Blackburn study.
  • enne says that even the asteroid impact at the K-T boundary likely only finished the job that major volcanic eruptions in India started. (Related: “What Killed Dinosaurs: New Ideas About the Wipeout.”)
chrispink7

Almost a Dozen Earthquakes Recorded in Clusters Near Yellowstone Park in Just 24 Hours - 0 views

  • An area near Yellowstone National Park has been struck by nearly a dozen earthquakes on Friday, according to the US Geological Survey.West Yellowstone in Montana reported around eleven earthquakes on Friday, with the strongest one measuring a magnitude of 3.1. The area has been hit by an additional 34 quakes in the past month, according to Idaho Statesman.
  • The other quakes ranged between 1.6 to 3.1 magnitudes and were about three miles (4.8 km) deep.A swarm of earthquakes is not unusual for the area. Yellowstone is one of the most seismically active places in the US, experiencing around 700 to 3,000 earthquakes every year, according to the national park's website.The earthquakes tend to occur in clusters. The largest occurred in 1985 when more than 3,000 earthquakes were recorded in three months on the northwest side of the park.
  • cientists don't think Yellowstone's supervolcano would be erupting soon (at least not in the next thousand years). Despite it being the subject of many apocalypse fantasies, the odds of it erupting within a given year are one in 730,000, according to the US Geological Survey. It last erupted 174,000 years ago.However, in the unlikely case, the supervolcano was to erupt – with the force of 1,000 Hiroshima atomic bombs – it would cause massive destruction in the US, along with other devastating natural phenomenons, including acid rain.
maxwellokolo

Volcanoes could erupt much more, thanks to climate change - 0 views

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    On the face of it, climate change and volcanic eruptions are completely unrelated. But in fact our warming world could trigger extra volcanic eruptions
nataliedepaulo1

Fight Erupts in Trump Administration Over Transgender Students' Rights - 0 views

  • Fight Erupts in Trump Administration Over Transgender Students’ Rights
  • One filing deadline is coming up this Thursday in the case before the Supreme Court involving the Virginia transgender boy, Gavin Grimm. He sued the Gloucester County School Board two years ago after the board refused to allow him to use the boys’ bathroom and told him he could use a separate bathroom in a converted janitors closet. The Obama administration had rejected that type of accommodation as unacceptable and discriminatory.
lilyrashkind

The Worst Time in History to Be Alive, According to Science - HISTORY - 0 views

  • The ninth plague of Egypt was complete darkness that lasted for three days. But in 536 A.D., much of the world went dark for a full 18 months, as a mysterious fog rolled over Europe, the Middle East and parts of Asia. The fog blocked the sun during the day, causing temperatures to drop, crops to fail and people to die. It was, you might say, the literal Dark Age.
  • What exactly did the first 18 months of darkness look like? The Byzantine historian Procopius wrote that “the sun gave forth its light without brightness, like the moon, during this whole year.” He also wrote that it seemed like the sun was constantly in eclipse; and that during this time, “men were free neither from war nor pestilence nor any other thing leading to death.”
  • This Late Antique Little Ice Age, as it’s known, came about when volcanic ash blocked out the sun.
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  • “It was a pretty drastic change; it happened overnight,” McCormick says. “The ancient witnesses really were onto something. They were not being hysterical or imagining the end of the world.”
  • The effects of the 536 eruption were compounded by eruptions in 540 and 547, and it took a long time for the Northern Hemisphere to recover. “The Late Antique Little Ice Age that began in the spring of 536 lasted in western Europe until about 660, and it lasted until about 680 in Central Asia,” McCormick says.
  • This period of cold and starvation caused economic stagnation in Europe that intensified in 541 when the first bubonic plague broke out. The plague killed between one-third and one-half of the population in the Byzantine Empire, or Eastern Roman Empire.
johnsonle1

Ten Centuries Later, a Pope and Knights Do Battle - The New York Times - 0 views

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    A seemingly obscure intra-Catholic squabble had erupted into an unexpected shock to the church with ideological fault lines running to the top of the Vatican. "The Vatican is a thing built of tradition," said John Thavis, the author of "The Vatican Diaries" and a veteran church analyst, "and once those traditional parts start feuding with each other, that is a dangerous sign."
daltonramsey12

After Missile Test, a War of Words Erupts Between Trump and Iran - 0 views

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    WASHINGTON - A day after the Trump administration put Iran on notice for its launch of a ballistic missile, a war of words erupted between the American president and the Iranian government, with President Trump insulting Tehran on Twitter and the Iranians responding in kind.
Javier E

Study Finds 50-Year Burst of Tropical Eruptions Spawned Enduring 'Little Ice Age' - NYT... - 2 views

  • “Abrupt onset of the Little Ice Age triggered by volcanism and sustained by sea-ice/ocean feedbacks.” The paper uses evidence and modeling to explain how the sun-blocking impact from a 50-year stretch of unusually intense eruptions of four tropical volcanoes caused sufficient cooling to produce a long-lasting shift in the generation and migration of Arctic Ocean sea ice, with substantial consequences for the Northern Hemisphere climate that lasted centuries and left a deep imprint on European history
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    Small changes cause long-term climate changes.
Javier E

New Studies of Permian Extinction Shed Light on the 'Great Dying' - NYTimes.com - 0 views

  • Dr. Clapham and his co-author, Jonathan L. Payne, a Stanford geochemist, concluded that animals with skeletons or shells made of calcium carbonate, or limestone, were more likely to die than those with skeletons of other substances. And animals that had few ways of protecting their internal chemistry were more apt to disappear. Being widely dispersed across the planet was little protection against extinction, and neither was being numerous. The deaths happened throughout the ocean. Nor was there any correlation between extinction and how a creature moved or what it ate. Instead, the authors concluded, the animals died from a lack of dissolved oxygen in the water, an excess of carbon dioxide, a reduced ability to make shells from calcium carbonate, altered ocean acidity and higher water temperatures. They also concluded that all these stresses happened rapidly and that each one amplified the effects of the others. That led to a wholesale change in the ocean’s dominant animals within just 200,000 years, or perhaps much less, Dr. Clapham said.
  • So what happened 252 million years ago to cause those physiological stresses in marine animals? Additional clues from carbon, calcium and nitrogen isotopes of the period, as well as from organic geochemistry, suggest a “perturbation of the global carbon cycle,” the scientists’ second paper concluded — a huge infusion of carbon into the atmosphere and the ocean.
  • scientists suspect that the answer lies in the biggest volcanic event of the past 500 million years — the eruptions that formed the Siberian Traps, the stairlike hilly region in northern Russia. The eruptions sent catastrophic amounts of carbon gas into the atmosphere and, ultimately, the oceans; that led to long-term ocean acidification, ocean warming and vast areas of oxygen-poor ocean water
blaise_glowiak

Was the Middle East better off with its dictators? - CNN.com - 0 views

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    While this instability is making the West -- particularly the United States -- uncomfortable, it is also a direct result of the West's own stance towards dictatorships in the region prior to and during the Arab Spring. The West's shortsightedness in handling the Middle East throughout its modern history has directly contributed to its current devastation. The situation in Yemen today shows that even though the status quo under dictatorships may have appeared stable, beneath the surface volcanoes were preparing to erupt But the current misery in the Middle East still does not mean that the region was better off under dictatorships. The aftermath of dictatorships is always messy, and democratic transition is never linear.
bluekoenig

Vesuvius eruption baked some people to death-and turned one brain to glass - 0 views

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    A rather interesting and gross discovery recently occurred in the ancient city of Herculaneum, the lesser known of the two cities destroyed by Mount Vesuvius, archeologists found a glassy substance in the skull of a body thought to be a cooked brain. The "glass" contained fatty acids and oily secretions often found on the human scalp and in the brain and nervous system. It's hypothesized that the room the body was found in heated up enough to melt the brain tissue into a liquid, rather than burning it, and rapidly cooled somehow to produce glass.
johnsonel7

Europe Confronts Coronavirus as Italy Battles an Eruption of Cases - The New York Times - 0 views

  • CASALPUSTERLENGO, Italy — Europe confronted its first major outbreak of the coronavirus as an eruption of more than 150 cases in Italy prompted officials on Sunday to lock down at least 10 towns, close schools in major cities and cancel sporting events and cultural touchstones, including the end of the Venice carnival.
  • The perception of a rising threat was amplified on television channels, newspaper headlines and social media feeds across Europe, where leaders could face their greatest challenge since the 2015 migration crisis.
  • The Trump administration has barred entry to the United States by most foreign nationals who have recently visited China, where the virus first appeared and spread. Much of the world has adopted similar controls, but the virus has continued to spread, most notably to South Korea, where more cases have been recorded than anywhere else outside China, and this past week to Iran, where eight deaths have been reported.
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  • Fears that the city could be quarantined triggered a run on supermarkets. By 5 p.m. on Sunday, at least one supermarket had run out of fruit, vegetables, meat and nearly all canned food.Some of the customers wore masks, and they all seemed in a hurry to fill up their carts with whatever was left on the shelves.
  • At least five members of the hospital medical staff and several patients have been infected. Other persons who tested positive include the man’s pregnant wife, some friends, and others who spent time with them. The towns surrounding the ones where the man works and lives have been included in the shutdown.
  • Even China — with an authoritarian government that has locked down areas with tens of millions of people in an attempt to stamp out the epidemic — has struggled to contain the virus, which has no known cure.
  • The Italian state, which leads the third largest economy in the eurozone, has not inspired much confidence of late, as it has been consumed by internal machinations. But health experts said they were more worried because the Italian health ministry appeared to have moved aggressively to prevent an outbreak, to no avail.
anonymous

Unrest Erupts After A Man Was Fatally Shot During An Arrest Attempt In Minneapolis : NPR - 0 views

  • Crowds vandalized buildings and stole from businesses in Minneapolis' Uptown neighborhood after officials said a man wanted for illegally possessing a gun was fatally shot by authorities who were part of a task force trying to arrest him that included U.S. Marshals.
  • Following the Thursday afternoon shooting, a small crowd gathered in the neighborhood where the man was shot, shouting expletives at police.
  • Later in the night, people vandalized "numerous" buildings and looted some, Minneapolis police spokesman John Elder said in a email to reporters early Friday. A dumpster was burned and windows were smashed.
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  • The U.S. Marshals Service said a task force was trying to arrest the man on a state warrant for being a felon in possession of a firearm.
  • The man, who was in a parked car, didn't comply with law enforcement and "produced a handgun resulting in task force members firing upon the subject," the U.S. Marshals said in a statement.
  • It was not clear how many law enforcement officers fired their weapons. A spokeswoman with the U.S. Marshals said the U.S. Marshals leads the task force, which is comprised of several agencies.
  • an aerial view of the top level of the parking ramp where Thursday's shooting reportedly occurred showed a silver sport utility vehicle with a shattered back window. It was surrounded by many other vehicles near a white pop-up tent. Several officers were nearby and in a glass-enclosed stairwell.
  • The state Bureau of Criminal Apprehension and the federal Bureau of Alcohol, Tobacco and Firearms both tweeted that they were responding to help investigate. The Marshals said the state BCA is leading the investigation.The Minneapolis Police Department said it was not involved in the shooting.
  • Before Thursday night's unrest, tensions in Minneapolis already had risen after crews early Thursday removed concrete barriers that blocked traffic at a Minneapolis intersection where a memorial to Floyd was assembled after his death.
anonymous

What We Know About The Boulder Grocery Shooting: 10 Murder Charges For Suspect : NPR - 0 views

  • Police in Boulder, Colo., have identified the suspect in Monday's shooting rampage at a grocery store as Ahmad Al Aliwi Alissa, 21. Ten people died in the shooting, including a Boulder police officer who had arrived to help those inside the store. The victims range in age from 20 to 65.Alissa has been charged with 10 counts of murder in the first degree, Boulder police said.
  • All of the victims have now been identified, and their families have been notified, Herold said at a news conference Tuesday morning.
  • The suspect is from Arvada, a small city between Denver and Boulder. He was wounded during the shooting and was expected to be released from the hospital and sent to the county jail sometime Tuesday, Boulder County District Attorney Michael Dougherty said.
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  • Herold said the suspect's injury was a "through-and-through" wound to his leg.Ben Markus of Colorado Public Radio reported that Alissa has a police record, having been arrested on a misdemeanor assault charge in 2018. He pleaded guilty and paid a fine to resolve that case, according to court records.
  • An "extensive investigation" is now under way into Alissa's life, Dougherty said. He added that the suspect has "lived most of his life in the United States," but he did not elaborate on the suspect's history.The arrest warrant affidavit for Alissa says he purchased a gun less than a week before Monday's shooting, citing official databases that show the suspect bought a Ruger AR-556 on March 16.
  • The U.S. flag was lowered to half-staff atop the White House on Tuesday in honor of the victims. President Biden said he and first lady Jill Biden were "devastated" to learn of the shooting. Speaking from the White House, Biden also said it's time for Congress to tighten U.S. gun laws.
  • Biden acknowledged that the inquiry is still in its early phases, but he added, "I don't need to wait another minute, let alone an hour, to take common-sense steps that will save lives in the future and to urge my colleagues in the House and Senate to act." Lawmakers' priorities, Biden said, should be once again to ban assault weapons and high-capacity magazines and close legal loopholes.
  • The arrest affidavit provides new details about what took place inside the store, drawing from 911 emergency calls and interviews with people who were present when mayhem erupted at the King Soopers grocery store on Table Mesa Drive.Store employees told Detective Joanna Compton that they saw the suspect shoot an older man in the parking lot.
  • The weapon used in the shooting is legally classified as a "pistol" in the U.S., but many people would likely consider it to be a rifle — and the affidavit repeatedly refers to it as one. The gun has the same lower receiver, the shell-like piece that houses the trigger, as AR-15 rifles that have been used in many other mass shootings in the United States.
  • Alissa surrendered to police after he was shot in the leg. An officer said the suspect took off most of his clothes and walked backward toward a SWAT team at the store."The suspect did not answer questions, though he asked to speak to his mother," the affidavit said.
  • As the scene was being cleared, authorities worked to account for people and locate victims. While most of the victims were inside the store, police found a dead person in the parking lot, next to a Mercedes sedan that Alissa had apparently driven to the grocery store.
  • Polis, who is from Boulder, noted that he has shopped at the same store where the violence erupted Monday. Herold later added that she lives about three blocks from the store.
  • Speaking about the slain officer, Herold said that just weeks ago, she had Talley and his family in her office so she could present an award. The commendation, she explained, was for one of his sons who had saved another boy's life by performing CPR.
  • The FBI, the Bureau of Alcohol, Tobacco, Firearms and Explosives and other federal agencies are helping to investigate, mainly by processing evidence at the crime scene and conducting interviews with witnesses, said Michael H. Schneider, FBI special agent in charge. He added that the effort is ongoing to determine what could have motivated the attack.
  • As a teenager in Arvada, Alissa was on his high school's wrestling team. Tyson Crosby, the father of a boy who competed against Alissa, remembered him as being nice but also "a little frustrated with life."Despite Alissa having some "anger management issues," Crosby told Colorado Public Radio, "I would have never expected to hear what I heard [about the shooting], that came as a complete shock."
  • The first reports of shots fired at the King Soopers grocery store reached the Boulder Police Department around 2:30 p.m. local time Monday, Herold said that evening. She provided more details on Tuesday, saying that with a "barrage" of calls coming in, officers were dispatched around 2:40 p.m. and arrived within minutes.The officers "immediately entered the store and engaged the suspect," the police department said in a news release. "There was an exchange of gunfire during which the suspect was shot. No other officers were injured. The suspect was then taken into custody at 3:28 p.m." and taken to a hospital, the agency said.
  • In the wake of the shooting, other state and local agencies offered to handle service calls for the Boulder police, Herold said. But she added that while her department appreciated the gesture, it declined the offers.
  • When the chief was asked what she's telling her officers now, Herold said, "I tell them that I'm sorry, we're going to get through this. Don't lose your compassion, and we'll get through this. And we'll come out of it stronger."
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