Tag Archives: Levels

'A war zone': Propane explosion kills firefighter, injures 6 others, levels building in Maine

'A war zone': Propane explosion kills firefighter, injures 6 others, levels building in MaineA firefighter was killed and at least six others were injured when a powerful propane explosion destroyed a new building Monday in Farmington, Maine.



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A Glacier the Size of Florida Is Becoming Unstable. It Has Dire Implications for Global Sea Levels

A Glacier the Size of Florida Is Becoming Unstable. It Has Dire Implications for Global Sea LevelsThwaites glacier in Antarctica might be past the point of no return. Scientists predict its ice sheet may break off, increasing sea levels.



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'Any amount we want': Iran poised to increase uranium enrichment at higher levels

'Any amount we want': Iran poised to increase uranium enrichment at higher levelsPresident Hassan Rouhani says Iran will commence higher-level uranium enrichment from July 7 if the impact of U.S. sanctions is not alleviated.



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The Latest: Flood levels reached record in 3 towns

The Latest: Flood levels reached record in 3 townsDES MOINES, Iowa (AP) — The Latest on flooding in the Midwest (all times local):



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Firearm deaths of US school-age children at 'epidemic' levels, study says

Firearm deaths of US school-age children at 'epidemic' levels, study saysA new study announced an alarming increase in the number of firearm deaths of school-age children in the United States:  38,942 in those 5 to 18 years old from 1999 to 2017.



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Study: Corruption levels linked to health of democracies

Study: Corruption levels linked to health of democraciesBERLIN (AP) — Countries like Hungary and Turkey are growing more corrupt as they become more autocratic, and threats to the American system of checks and balances have knocked the United States out of the top 20 "cleanest" countries, according to a closely watched annual survey released Tuesday.



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NY sues Walmart, Target for selling toys with high lead levels

NY sues Walmart, Target for selling toys with high lead levelsNew York state authorities on Thursday announced a lawsuit against retail giants Walmart and Target for selling Chinese-made toys that had up to 10 times the legal limit of lead. The lawsuit seeks up to $ 6,000 in penalties for each of the thousands of Cra-Z-Jewelz jewelry kits the retailers and importer LaRose Industries sold from 2015 to 2016 before they were recalled. Authorities also are asking the three companies to take steps to prevent dangerous toys from reaching store shelves.



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Feeding caravan hysteria, Trump says border troop levels may reach 15,000

Feeding caravan hysteria, Trump says border troop levels may reach 15,000Before flying to campaign rallies in Florida, the president suggests the U.S. could send as many as 15,000 U.S. troops to the border with Mexico.



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Rising sea levels threatens coastal cities with more tsunamis, scientists warn

Rising sea levels threatens coastal cities with more tsunamis, scientists warnTsunamis will become more common and more ferocious with global warming, scientists have warned after a study found that global sea level rises will increase the risk of coastal cities being wiped out. Smaller earthquakes that currently pose no serious tsunami threat could unleash waves capable of inundating coastal cities, researchers found in a study focusing on the city of Macau in China. Currently it is considered safe from tsunamis, despite lying within a major earthquake zone. At today's sea level, it would take a very powerful earthquake tipping past magnitude 8.8 to cause widespread tsunami flooding in Macau. But a half-metre rise in sea level – predicted to occur in the region by 2060 – could more than double the chances of a huge tsunami swamping the territory, according to the research. A three-foot sea level rise, expected by 2100, would increase the risk up to 4.7 times. The source of the earthquake danger is the Manila Trench, a massive crack in the floor of the South China Sea formed by the collision of two tectonic plates. It has generated numerous earthquakes, though none larger than magnitude 7.8 since the 1560s. A modest rise in sea levels would greatly amplify the tsunami threat from smaller earthquakes, the computer simulation study showed. Cities most prone to natural disaster Lead researcher Dr Robert Weiss, from Virginia Polytechnic Institute and State University (Virginia Tech) in the US, said: "Our research shows that sea-level rise can significantly increase the tsunami hazard, which means that smaller tsunamis in the future can have the same adverse impacts as big tsunamis would today. "The South China Sea is an excellent starting point for such a study because it is an ocean with rapid sea-level rise and also the location of many mega cities with significant worldwide consequences if impacted." The team's findings are reported in the journal Science Advances.



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Antarctica is losing billions of tons of ice each year, sharply boosting sea levels

Antarctica is losing billions of tons of ice each year, sharply boosting sea levelsEarth-orbiting satellites are watching Antarctica thaw.  Eighty scientists from over 40 earth sciences agencies, including NASA and the European Space Agency, used satellite data from between 1992 to 2017 to find that Antarctica has lost three trillion tons of ice to the oceans over this 25-year period. Their research, published Wednesday in the journal
Nature, confirms a troubling trend, as much of the world's fresh water is frozen away in Antarctica. It's accelerating melt will likely play a primary role in swelling Earth's oceans two or three feet higher this century, or perhaps as much as six feet. SEE ALSO: Arctic sea ice is loaded with plastic litter from cigarettes and paint The most vulnerable masses of ice are in West Antartica, where NASA has already witnessed an accelerating melt. "They're melting like gangbusters," Josh Willis, an oceanographer at NASA's Jet Propulsion Laboratory, said in an April interview. "These are massive rivers of ice that are dumping just huge amounts of ice into the oceans." Image: imbie/Planetary VisionsPerhaps most worrying, said Willis, is that this melting is unprecedented. Scientists are watching this thawing for the first time. They can see the melt is already accelerating — and it's unknown what's exactly to come. "We have long suspected that changes in Earth’s climate will affect the polar ice sheets," Andrew Shepherd, a climate scientist and one of the study's lead authors, said in a statement.   "Thanks to the satellites our space agencies have launched, we can now track their ice losses and global sea level contribution with confidence," said Shepherd. "According to our analysis, there has been a steep increase in ice losses from Antarctica during the past decade, and the continent is causing sea levels to rise faster today than at any time in the past 25 years."  Over this 25-year period, scientists measured around 7 and a half millimeters of sea level rise from the ice-clad continent. This might not seem like a lot, Robin Bell, a marine geologist at Columbia University's Lamont-Doherty Earth Observatory, said over email. But, the more recent rapid loses in Antarctic ice "indicates Antarctica can change faster than we thought," said Bell. In fact, 40 percent of the total rise, or about 3 millimeters, came in the last 5 years. That's when things really started to change. Until 2012, the study's researchers found that Antarctica had been shedding 84 billion tons of ice into the sea each year, incrementally boosting sea levels by around 0.2 millimeters annually.  But beginning in 2012, Antarctica began to lose nearly 240 billion tons per year, largely from two giant West Antarctic glaciers, Pine Island and Thwaites.   The West Antarctic ice is particularly vulnerable because these massive ice sheets sit over the ocean, and even slightly warmer ocean waters can eat away at them from the bottom.  The locations of the Pine Island and Thwaites glaciers, which alone have enough ice to raise sea levels by 4 feet, says NASA.Image: Nasa"The largest mass loss is observed where relatively warm ocean waters are melting floating ice shelves from below," Steve Rintoul, a study coauthor and physical oceanographer from the Antarctic Climate and Ecosystems Cooperative Research Center, in Australia, said in a statement.  These masses of ice, which sit on the edge of the continent, act as a plug, holding the continent's thick sheets of heavy ice back.  "As the ice shelves thin and weaken, they provide less resistance to ice flow from the continent to the sea," explained Rintoul. "This increases the rate of mass loss from the Antarctic Ice Sheet and therefore the rate of sea level rise." This leads to a foreboding future. Once these melting ice sheets on the coast go, nothing is left to hold West Antartica's ice back. And as the authors note, "The ice sheets of Antarctica hold enough water to raise global sea level by 58 meters." Certainly, no one is suggesting this will all dump into ocean — not nearly. But only an insignificant amount needs to melt into the sea for coastal dwellers, where billions reside and many more are expected to live, to be impacted by rising seas, flooding, and surges of stormwater. Around 40 percent of Americans, for example, live directly on the shoreline.  To better grasp exactly how much ice is lost each year — and more critically, how fast these losses are accelerating — space agencies will continue to peer onto the thawing continent. And down on Earth, scientists will even depend on seals, fitted with data-collecting devices, to dive under this melting ice.  WATCH: Ever wonder how the universe might end?



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