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How we know what lies at Earth's core
Humans have been all over the Earth. We've conquered the lands, flown through the air and dived to the deepest trenches in the ocean. We've even been to the Moon. But we've never been to the planet's core. We haven't even come close. The central point of the Earth is over 6,000km down, and even the outermost part of the core is nearly 3,000 km below our feet. The deepest hole we've ever created on the surface is the Kola Superdeep Borehole in Russia, and it only goes down a pitiful 12.3 km.
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How a Volcanic Eruption in 1815 Darkened the World but Colored the Arts
In April 1815, the most powerful volcanic blast in recorded history shook the planet in a catastrophe so vast that 200 years later, investigators are still struggling to grasp its repercussions. It played a role, they now understand, in icy weather, agricultural collapse and global pandemics — and even gave rise to celebrated monsters. Around the lush isles of the Dutch East Indies — modern-day Indonesia — the eruption of Mount Tambora killed tens of thousands of people.
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+39 +1
One-meter rise in sea levels inevitable, NASA says
NASA scientists have warned that sea levels around the world are to rise by at least one meter (3 feet) in the next 100 to 200 years. Major cities like Tokyo and Singapore could disappear, new data suggest.
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+21 +1
Southern Kansas sees sudden spike in earthquakes
A sudden spike of earthquakes in southern Kansas is raising eyebrows in the region, where there have been more earthquakes in the past two weeks than there were in the years between 1990 and 2013. As of Oct. 26, there have been 52 earthquakes in Kansas since Oct. 15, most of a magnitude around 2.0 or 3.0. According to the Kansas Geological Survey, there were just 19 earthquakes in the state between 1990 and 2010. There were no recorded earthquakes in 2011 or 2012.
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Fresh Climate Data Confirms 2015 Is Unlike Any Other Year in Human History
Over the past few days, a bevy of climate data has come together to tell a familiar yet shocking story: Humans have profoundly altered the planet’s life-support system, with 2015 increasingly likely to be an exclamation point on recent trends. On Monday, scientists at Britain’s national weather service, the Met Office, said our planet will finish this year more than one degree Celsius warmer than preindustrial levels for the first time.
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7 million Americans at risk of man-made earthquakes, USGS says
Earthquakes are a natural hazard — except when they're man-made. The oil and gas industry has aggressively adopted the technique known as hydraulic fracturing, or fracking, to shatter subsurface shale rock and liberate the oil and gas lurking there. But the process results in tremendous amounts of chemical-laden wastewater. Horizontal drilling for oil can also produce massive amount of natural, unwanted salt water.
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5 Major Earthquakes In 48 Hours As A Seismologist Warns ‘Catastrophic Mega Earthquakes’ Are Coming
Why is the crust of the Earth shaking so violently all of a sudden?
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Mystery foam fills the streets after earthquake strikes Japan
A strange sea of bubbles filled streets in a southern Japanese city in the early hours of Saturday morning, after an earthquake and several aftershocks rattled the south of the country. In the Tenjin area of Fukuoka city, motorists and pedestrians made their way through the foamy mess after it spilled out onto the streets. Some reported that an underground pipe burst, releasing the material, but little information was immediately available.
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Viruses Find Love In A Boiling Place
Odd viruses flourish in boiling, acidic Yellowstone hot springs. By Joel Shurkin.
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Tsunami warning cancelled as magnitude-7.0 earthquake strikes Vanuatu
A tsunami warning issued after a shallow magnitude-7.0 earthquake struck the Vanuatu island of Malekula, 64 kilometres south south-east of Luganville, has been cancelled. But the Pacific Tsunami Warning Centre (PTWC) has warned that minor sea level fluctuations of up to 0.3 metres above and below the normal tide may continue over the next few hours. The sparsely populated village of Norsup was one kilometre from its epicentre, which struck on land at...
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Rainwater can help trigger earthquakes
Where it rains, it rumbles. Rainwater and snowmelt help fuel intense earthquakes along a New Zealand tectonic fault, new research suggests. Tracing the source of water flowing through New Zealand’s Alpine Fault shows that more than 99 percent of it originated from precipitation, researchers report April 19 in Earth and Planetary Science Letters. Scientists knew that underground fluids help trigger quakes, but the origins of these fluids have been uncertain. In this case...
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Massive ‘Lava Lamp’ Blobs Deep Inside Earth Have Scientists Puzzled
Geoscientists have much to learn about mysterious blobs of hot rock deep in the Earth’s mantle, such as exactly what they’re made of and how they formed. By Greg Uyeno.
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Pink Tentacle
+ Video
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Texas quakes caused by injection wells, scientists determine
Texas earthquakes, one reaching magnitude 4.8, were caused by injections of wastewater in drilling for oil and gas, scientists say. Using radar from satellites, a study published in the journal Science, found that five significant East Texas quakes in 2012 and 2013 were not natural occurrences. For the first time, scientists were able to track the uplifting ground movements in the quakes. The study's co-author, Stanford University geophysicist William Ellsworth, said the technique provides a way to determine which quakes are man-made.
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Risk of big earthquake on San Andreas fault rises after quake swarm at Salton Sea
The rumbling started Monday morning deep under the Salton Sea. A rapid succession of small earthquakes — three measuring above magnitude 4.0 — began rupturing near Bombay Beach, continuing for more than 24 hours. Before the swarm started to fade, more than 200 earthquakes had been recorded.
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Rome metro evacuated as three earthquakes hit Italy
Four earthquakes have struck Italy, shaking buildings in Rome and Florence just months after almost 300 people were killed in one of the worst disasters in living memory. Residents of the capital described their homes and offices shaking when the first tremor struck at around 10.25am local time (9.25am BST). The US Geological Survey (USGS) measured the initial quake at magnitude 5.3, placing the epicentre in central Italy at a depth of six miles (10km).
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A self-repairing surface that stays clean and dry
THE repulsive powers of lotus leaves are the stuff of legend. Water sprayed onto them forms instantly into silvery beads (see picture) and rolls right off again—carrying any dirt on the leaf’s surface with it. The physics behind this impressive and beautiful phenomenon is well understood. Lotus leaves repel water because they are covered with minuscule waxy nodules that stop water molecules bonding with a leaf’s surface tissues, meaning those molecules bond with each other instead. That arrangement has been replicated in several man-made materials.
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6.0 earthquake strikes western Turkey, depth of 10km
An earthquake with a magnitude of at least 6.0, at a depth of approximately 10km, has struck off the coast of western Turkey. Effects of the quake have been felt in the cities of Izmir and as far away as Athens in Greece, according to the European Earthquake monitor, EMSC.
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'Big bang' and 'pillar of fire' as latest of two new craters forms this week in the Arctic
Scientists have located two fresh craters formed on Yamal peninsula this year, with the latest exploding on 28 June with the eruption picked up by new seismic sensors specifically designed to monitor such events, The Siberian Times can disclose.
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A molten puddle deep under Iceland may reveal where volcanoes get their lava
Ultralow-velocity zones may anchor volcano-feeding mantle plumes
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