Science (General/Chat)
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Fermi telescope finds evidence that positrons, not just electrons, are in storms on EarthWashington — Designed to scan the heavens thousands to billions of light-years beyond the solar system for gamma rays, the Fermi Gamma-ray Space Telescope has also picked up a shocking vibe from Earth. During its first 14 months of operation, the flying observatory has detected 17 gamma-ray flashes associated with terrestrial storms — and some of those flashes have contained a surprising signature of antimatter.
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Just as some people today believe a Maya calendar pinpoints 2012 as the end of the world as we know it, some ancient Romans saw the A.D. 79 eruption of Mount Vesuvius (pictured: Pompeiians flee the city in an illustration), as a sign of a coming apocalypse. That's because Roman philosopher Seneca, who died in A.D. 65, had predicted the Earth would go up in smoke: "All we see and admire today will burn in the universal fire that ushers in a new, just, happy world," he said, according to the 1999 book Apocalypses. The end never came, but that...
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GUATEMALA CITY (Reuters) – Scuba divers are exploring the depths of a volcanic lake in Guatemala to find clues about an ancient sacred island where Mayan pilgrims flocked to worship before it was submerged by rising waters. Samabaj, the first underwater archaeological ruins excavated in Guatemala, were discovered accidentally 12 years ago by a diver exploring picturesque Lake Atitlan, ringed by Mayan villages and popular with foreign tourists. "No one believed me, even when I told them all about it. They just said 'he's mad'," said Roberto Samayoa, a businessman and recreational diver who grew up near the lake where...
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Scene 1: The White House Rose Garden. The President of the United States is standing before a crowd of amateur astronomers, students and teachers, with his science adviser by his side. In front of him: a telescope. The president bends down and presses his eye to the eyepiece. Flashbulbs pop. Scene 2: Kennedy Space Center. The Ares 1-X rocket sits on the launch pad, ready for its first test flight. More than 300-feet tall but fewer than 20 feet in diameter, it looks as precarious as a flying chopstick, but tomorrow's astronauts might ride a rocket like this one to...
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Back in 1980 the US space programme was in the doldrums. Apollo was fading into history and there hadn't been a US astronaut in space for five years. The quirky space shuttle, much diminished from its initial vision, was still waiting to make its maiden flight. But that fall came Cosmos, a revolutionary documentary series with a compelling host. Both the television universe and the real one have never been quite the same. Carl Sagan, by equal measure professorial and childlike, offered space enthusiasts a new paradigm. Buck Rogers was out; refined and groovy cosmic citizen was in. Here was...
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Long story short. I am looking to get a new cordless phone that is bluetooth enabled. This way I can link my cordless phone and my cell phone (i.e. when at home, and without having to do call forward, I can get the cell phone calls on my home phone). I know the Vtech DS6321 is the newest model that I know of that does this, but has one drawback, or is missing one feature that I need. Call Blocking on the phone. My current cordless phone has call blocking on it (Panasonic KX-TGA740), but none of the other features...
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Scientists have developed an atlas of the bacteria that live in different regions of the human body. Some of the microbes help keep us healthy by playing a key role in physiological functions. The University of Colorado at Boulder team found unexpectedly wide variations in bacterial communities from person to person. The researchers hope their work, published in Science Express, will eventually aid clinical research. They say that it might one day be possible to identify sites on the human body where transplants of specific microbes could benefit health. The study was based on an intensive analysis of the bacteria...
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Hearing the heartbeat of the Earth Getting the vision thing right is important for technology announcements and HP has it nailed, twinning a great vision with advances in its sensing technology. Here's Peter Hartwell, a senior researcher at HP Labs: "With a trillion sensors embedded in the environment, all connected by computing systems, software and services, it will be possible to hear the heartbeat of the Earth, impacting human interaction with the globe as profoundly as the Internet has revolutionised communication." Okay Peter, we're paying attention now. The meat of this concerns digital MEMS (micro-electrical-mechanical system) - accelerometers that signal...
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If worms are any indication, all the sugar in your diet could spell much more than obesity and type 2 diabetes. Researchers reporting in the November issue of Cell Metabolism, a Cell Press publication, say it might also be taking years off your life...
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Archaeologists claim to have found the oldest known artefact in the Americas, a scraper-like tool in an Oregon cave that dates back 14,230 years.
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I thought I'd be domestic for a bit and explore state parks in Montana. Obviously it's a state famous for mountains and glaciers and geysers (well, most of those are in Wyoming, but still), so I wondered what would be at the "state park" level. Found some next stuff. Each picture comes with a link to the page on the Montana state parks Web site. 1. Giant Springs State Park 2. Medicine Rocks State Park (click this one for full-size 3. Lewis and Clark Caverns (Montana's first state park) A very good image of the caverns (I can't share this...
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When scientists search the heavens for habitable worlds beyond Earth, they don't necessarily know what to look for. A new study has found that the most probable place to find intelligent life in the galaxy is around stars with roughly the mass of the sun, and surface temperatures between 5,300 and 6,000 Kelvin (9,100 and 10,300 degrees Fahrenheit) - in fact, stars very similar to our own sun.
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The Large Hadron Collider, the world's most powerful particle accelerator, just cannot catch a break. First, a coolant leak destroyed some of the magnets that guide the energy beam. Then LHC officials postponed the restart of the machine to add additional safety features. Now, a bird dropping a piece of bread on a section of the accelerator has, according to the Register, shut down the whole operation. The bird dropped some bread on a section of outdoor machinery, eventually leading to significant over heating in parts of the accelerator. The LHC was not operational at the time of the incident,...
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An archaeologist says excavations in southern Georgia have turned up beads, metal tools and other artifacts that may pinpoint part of the elusive trail of the 16th-century Spanish explorer Hernando de Soto. Dennis Blanton of the Fernbank Museum of Natural History in Atlanta was scheduled to present his findings Thursday to the Southeastern Archaeological Conference in Mobile, Ala. Excavations since 2006 in rural Telfair County uncovered remains of an Indian settlement along with nine pea-sized glass beads and six metal objects, including three iron tools and a silver pendant. Blanton says the artifacts are consistent with items Spanish explorers traded...
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The bed of artefacts in the state of Sonora in northwest Mexico also includes the bones of an extinct cousin of the mastodon called a gomphothere. The beast was probably hunted and killed by the Clovis people, known for their distinctive spear points, who mysteriously disappeared within about 500 years of leaving their first archeological traces. Intact Clovis camp sites and extensive evidence of hunting has been found across the United States, with the highest concentration of sites just north of the Mexican border, in the San Pedro River basin of southeastern Arizona. But relatively little is known about their...
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Correlation between mountain growth and climateThe Alps are growing just as quickly in height, as they are shrinking. This paradoxical result could be proven by a group of German and Swiss geoscientists. Due to glaciers and rivers about exactly the same amount of material is eroded from the Alp slopes as is regenerated from the deep Earth's crust. The climatic cycles of the glacial period in Europe over the past 2.5 million years have accelerated this erosion process. In the latest volume of the science magazine "Tectonophysics" ( No. 474, S.236-249) the scientists prove that today's uplifting of the Alps...
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The Falklands wolf has puzzled evolutionary biologists since Charles Darwin first encountered it during the voyage of the Beagle in the 1830s. It was the only native land mammal on the Falkland Islands, which are 300 miles off the coast of Argentina. No one knew how it got there or what mainland animals it was descended from — and it did not help that the wolf was hunted to extinction by 1876. But using genetic analysis, Graham J. Slater, a post-doctoral researcher at the University of California, Los Angeles, and colleagues have solved some of the mystery. The closest living...
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NASA's Constellation Program has recommended dropping a planned follow-on to last week's successful Ares I-X flight-test because it doesn't have the funding necessary to get an upper stage engine ready in time. Instead, the Ares I-X engineering team will study the costs and benefits of going ahead with a 2012 launch previously dubbed "Ares I-X prime" that would flight-test a full five-segment Ares I solid-fuel first stage and the Orion crew exploration vehicle launch abort system at high altitude, according to Constellation Program Manager Jeff Hanley. Hanley said on Nov. 3 he has recommended to NASA headquarters that the Ares...
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Striking new photos of water-vapor geysers erupting from Saturn's moon Enceladus were beamed to Earth this week by NASA's Cassini spacecraft in orbit around the ringed planet.
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The small earthquakes that sporadically rattle the central United States may actually be aftershocks from a few extremely large quakes that occurred in the region almost 200 years ago, according to a new study The New Madrid Earthquakes, which struck between December 1811 and February 1812, are some of the strongest seismic events ever to occur in the contiguous United States in recorded history. The largest quake is estimated to have been 8.0 in magnitude and was powerful enough to temporarily make the Mississippi River flow backwards. The heart of the seismic activity was near the town of New Madrid,...
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SYDNEY – In the world of fiddler crabs, the best form of protection for females is, apparently, having sex with the neighbors, according to an Australian study published Wednesday. Researchers from The Australian National University in Canberra found male fiddler crabs will happily defend a nearby female against intruders — partly because the females will dole out sex in return. "The fact that the neighbor comes over and helps to defend another territorial individual is pretty unusual," said Michael Jennions, who helped conduct the study, the results of which were published in the journal Biology Letters. "This study shows, for...
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Scientists in Washington, D.C. are reporting laboratory evidence supporting the possibility that some of Earth's oil and natural gas may have formed in a way much different than the traditional process described in science textbooks. Their study is scheduled for Nov./Dec. issue of ACS' Energy & Fuels, a bi-monthly publication. Anurag Sharma and colleagues note that the traditional process involves biology: Prehistoric plants died and changed into oil and gas while sandwiched between layers of rock in the hot, high-pressure environment deep below Earth's surface. Some scientists, however, believe that oil and gas originated in other ways, including chemical reactions...
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SCIENTISTS have found that - just like some people - fiddler crabs will exchange favours for sex. Male crabs will protect a female neighbour but do so partly in exchange for sex. Australian National University researchers Richard Milner, Michael Jennions and Patricia Blackwell in a study published in Biology Letters looked at how female crabs - those without the large claw - go about protecting their territories, The Courier-Mail reports. They found sexual offerings lead to neighbourhood coalitions, where a male crab protected females from homeless males seeking territory. The males' giant claw is the largest weapon relative to body...
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In a wide-ranging interview in the People's Liberation Army (PLA) Daily, air force commander Xu Qiliang said it was imperative for the PLA air force to develop offensive and defensive operations in outer space. "We must build an outer space force that conforms with the needs of our nation's development (and) the demands of the development of the space age." "Only power can protect peace," the 59-year-old commander said in the interview given to coincide with this month's 60th anniversary of the founding of the PLA air force.
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Research at the universities of Liverpool and Oxford into the finger length of primate species has revealed that cooperative behavior is linked to exposure to hormone levels in the womb. The hormones, called androgens, are important in the development of masculine characteristics such as aggression and strength. It is also thought that prenatal androgens affect finger length during development in the womb. High levels of androgens, such as testosterone, increase the length of the fourth finger in comparison to the second finger. Scientists used finger ratios as an indicator of the levels of exposure to the hormone and compared this...
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The DSi shatters and fragments, which is more effective at maiming and disabling a target. On the other hand, the N97 remains whole, for greater penetration through tough surfaces. Both, however, are fun to look at. Far from an honest ballistics test, the shoot(ing), staged by French gaming magazine Amusement, was just an opportunity to snap a few stunning photos. Which is fine! And which they did! So, where's the video? Update: Yeah, you guys are right—the black one is an N97, not a PSP. Still though!
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Sea lions and other ocean-going animals are proving to the Navy that they’re worth their salt. The Navy has enlisted the natural talents of sea lions, seals and dolphins to help in the recovery of underwater objects and provide security in the water, much as military working dogs do on land. Outfitted with a special harness, sea lions carry cameras that help researchers get a better view of the ocean floor or perhaps catch divers attempting to gain unauthorized access to ports or vessels. The animals also can carry tools such as tow lines to attach to underwater objects. Four...
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A vast pool of molten rock in the continental crust that underlies southwestern Washington state could supply magma to three active volcanoes in the Cascade Mountains -- Mount St. Helens , Mount Rainier and Mount Adams... Other scientists dismiss the existence... Rather than magma heated to 1,300 to 1,400 degrees, some think it could be water... Seth Moran , a volcano seismologist with the USGS Cascades Volcano Observatory in Vancouver, Wash... said the most telling evidence that the theory was wrong was the lack of any surface evidence, such as geothermal vents or hot springs, among the mountains that would...
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Britt Hume says that D'rats have lost their intensity and the "intensity" has moved over to the Tea-Party Movement. Karl Rove put the best perspective by saying how Corzine outspend his opponent by 3 to 1 and still LOST
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The ancient South American Nasca civilization may have caused its own demise by clear-cutting huge swaths of forest, a new study has found. The civilization disappeared mysteriously around 1,500 years ago, after apparently prospering during the first half of the first millennium A.D. in the valleys of south coastal Peru. Scientists have previously suggested a massive El Niño event disrupted the climate and caused the Nasca's demise, but new research suggests that deforestation may have also played an important role. The Nasca are best known for leaving behind large geoglyphs called Nazca lines carved into the surface of the vast,...
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Recently, a new hypothesis about the origin of the image seen on the Turin Shroud has been presented by Prof. Luigi Garlaschelli1 during a press release. The results of the experiments based on this hypothesis were shown and the explanations and photographs are available on the author web site2. Starting from these data and some complementary explanations kindly furnished to me by Prof. Garlaschelli, it is now possible to begin to examine the plausibility of this hypothesis. The hypothesis of Prof. Luigi Garlaschelli (L.G. in the rest of the text) can be briefly but accurately summarized. A medieval artist originally...
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Dressing to impress The amazing mating display of the marvellous spatuletail hummingbird has been filmed in full for the first time. The spatuletail hummingbird is among the most rare and striking of birds. By using a high speed camera, a BBC natural history film crew was the first to capture the mating sequence in super slow motion. The crew also filmed a male advertising in front of a female, and solved a mystery of how the male birds make a snapping sound during the display. The mating display of the marvellous spatuletail hummingbird (Loddigesia mirabilis) is captured for the BBC...
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A gigantic, previously unknown set of galaxies has been found in the distant universe, shedding light on the underlying skeleton of the cosmos. "Matter is not distributed uniformly in the universe," said Masayuki Tanaka, an astronomer with the European Southern Observatory (ESO) who helped discover the galactic assemblage. "In our cosmic vicinity, stars form in galaxies and galaxies usually form groups and clusters of galaxies." But those collections of matter are just small potatoes compared to larger structures long-theorized to exist. "The most widely accepted cosmological theories predict that matter also clumps on a larger scale in the so-called 'cosmic...
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They say no one remembers No. 2, but the second manned lunar landing was memorable for a number of reasons. First, almost anyone familiar with the Apollo program remembers the launch. Apollo 12 was successfully launched in a rainstorm from Kennedy Space Center on Nov. 14th, 1969. As the Saturn V lifted from the launch pad, the familiar voice of Mission Commander Pete Conrad was heard on the air-to-ground loop playfully exclaiming, “That’s a LOVELY liftoff, that’s not bad at all!”, and indeed for a time it wasn’t. While normal at first, all hell broke loose about 30 seconds into...
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Nov. 2, 2009 (Philadelphia) -- A newly discovered strain of drug-resistant staph bacteria is five times more deadly than other strains, a new study suggests. Adding insult to injury, the new superbug appears to have some resistance to the antibiotic commonly used to treat it, researchers report. Half of patients infected with the new strain of MRSA (methicillin-resistant Staphylococcus aureus) died within 30 days, says Carol Moore, PharmD, a research investigator in infectious diseases at Henry Ford Hospital in Detroit. That compares to only about 10% of patients infected with other MRSA strains, she tells WebMD. Moore and colleagues studied...
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Malaysia admitted that it is getting rid of its MiG-29 fighters because the aircraft are too expensive to maintain. It costs about $5 million a year, per aircraft, to keep them in flying condition. Three years ago, Malaysia bought two more MiG-29s, in addition to the 18 it got in the 1990s. Two of those were lost due to accidents. Malaysia has since ordered 18 Su-30 fighters, and will apparently order more to replace the MiG-29s. Malaysia also bought eight F-18Ds in the 1990s, and is getting rid of those as well. Russia has offered better prices on maintenance contracts...
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A 10-ton fishing boat has been sunk by gigantic jellyfish off eastern Japan. -snip- The crew of the fishing boat was thrown into the sea when the vessel capsized, but the three men were rescued by another trawler, according to the Mainichi newspaper. The local Coast Guard office reported that the weather was clear and the sea was calm at the time of the accident.
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The mysterious people who etched the strange network of 'Nazca Lines' across deserts in Peru hastened their own demise by clearing forests 1,500 years ago, according to British scientists. The Nazca people, famed for giant animal drawings most clearly visible from the air, became unable to grow enough food in nearby valleys because the lack of trees made the climate too dry. Archaeologists examining the remains of the Nazca, who once flourished in the valleys of south coastal Peru, discovered a sequence of human-induced events which led to their 'catastrophic' collapse around 500 AD. Author Oliver Whaley, of the Royal...
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BUTCHER Pan Xueping must have the world's strangest hobby. He collects hairballs from the stomachs of slaughtered pigs - just for fun. Pan, of Xiyangpan, eastern China, said: "They are very rare - I probably only find about one every three months when I'm cleaning the animals intestines. "I then wash them carefully to remove all the dirt and then I dry them with a hairdryer to make them nice and fluffy." The 42-year-old, who works in an abattoir, has amassed hundreds of furry balls over the nine years since starting his job, as reported in the Austrian Times. He...
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Geologists Show that Seafloor Dynamics Are at Work in Splitting African Continent In 2005, a gigantic, 35-mile-long rift broke open the desert ground in Ethiopia. At the time, some geologists believed the rift was the beginning of a new ocean as two parts of the African continent pulled apart, but the claim was controversial. Now, scientists from several countries have confirmed that the volcanic processes at work beneath the Ethiopian rift are nearly identical to those at the bottom of the world's oceans, and the rift is indeed likely the beginning of a new sea. The new study, published in...
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NASA's Kepler mission is unlikely to detect any Earth-like exoplanets before 2011 due to an electronic glitchKepler, NASA's mission to search for planets around other stars, will not be able to spot an Earth-sized planet until 2011, according to the mission's team. The delays are caused by noisy amplifiers in the telescope's electronics. The team is racing to fix the issue by changing the way data from the telescope is processed, but the delay could mean that ground-based observers now have the upper hand in the race to be the first to spot an Earth twin. "We're not going to...
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"Now I am become Death, the destroyer of worlds." —The Bhagavad Gita Seven years after the nuclear tests in Alamogordo, New Mexico, Dr. J. Robert Oppenheimer, the father of the atomic bomb, was lecturing at a college when a student asked if there were any U.S. atomic tests before Alamogordo. “Yes, in modern times,” he replied. The sentence, enigmatic and incomprehensible at the time, was actually an allusion to ancient Hindu texts that describe an apocalyptic catastrophe that doesn’t correlate with volcanic eruptions or other known phenomena. Oppenheimer, who avidly studied ancient Sanskrit, was undoubtedly referring to a passage in...
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How can an X chromosome be nearly as big as the head of the sperm cell? No, this isn’t a mistake. First, there’s less DNA in a sperm cell than there is in a non-reproductive cell such as a skin cell. Second, the DNA in a sperm cell is super-condensed and compacted into a highly dense form. Third, the head of a sperm cell is almost all nucleus. Most of the cytoplasm has been squeezed out in order to make the sperm an efficient torpedo-like swimming machine.
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THE Federal Government told scientists monitoring the huge oil leak off Australia's northern coast to focus on the Indonesian side of the leaking well. The instruction meant waters closer to the Australian coast, which contain more biodiversity and include important whale habitats, were not assessed for oil contamination in a report that the federal Environment Department released on Friday. To complicate matters, fire broke out yesterday on the oil rig, which has been leaking oil into the Timor Sea for 10 weeks. Oil field operator PTTEP Australasia said the West Atlas rig and Montara well-head platform were on fire. No...
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Cobbling together 3000 individual photographs, a physicist has made a new high-resolution panoramic image of the full night sky, with the Milky Way galaxy as its centerpiece. Axel Mellinger, a professor at Central Michigan University, describes the process of making the panorama in the November issue of Publications of the Astronomical Society of the Pacific.
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A giant cloud of hydrogen gas is speeding toward a collision with our Milky Way Galaxy, and when it hits -- in less than 40 million years -- it may set off a spectacular burst of stellar fireworks.
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The site was found by accident when the Suez Canal was being constructed in 1860. Workers quarrying Santorini's volcanic ash discovered the ruins, but serious excavations at the site didn't begin until 1967. An unfortunate collapse of the roof in 2005, which killed a British tourist, caused the site to be closed. It's scheduled to be reopened sometime after 2010. Greek bureaucracy has brought the repairs of the building to a halt, which has caused Santorini's tourist trade to suffer. Akrotiri is referred to by some as the "Minoan Pompeii" because of the similarities of the destruction by volcano and...
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A husband and wife team of American paleontologists has discovered a new species of dinosaur that lived 112 million years ago during the early Cretaceous of central Montana
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An inscribed stele erected at Thebes by Ahmose, the first Pharaoh of the 18th Dynasty, documents a destructive storm accompanied by flooding during his reign. Fragments of the stele were found in the 3rd Pylon of the temple of Karnak at Thebes between 1947 and 1951 by the French Mission. A restoration of the stele and translation of the text was published by Claude Vandersleyen (1967). In the following year (1968), Vandersleyen added two more fragments, one from the top of the inscription and a small piece from line 10 of the restored text, which had been recovered by Egyptian...
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