Geological Truisms Questioned

first_imgNothing is a constant in scientific theories.  Popular ideas often wind up historical anecdotes.  What will happen to these two popular concepts?Snowball Earth Melts:  The idea that prior to the emergence of complex life the Earth was frozen over has been given the colorful title, “Snowball Earth.”  Scientists at Imperial College, London, are questioning whether this ever happened, according to EurekAlert.  They claim to have found evidence of repeated hot and cold cycles that would not have allowed Earth to undergo a prolonged period of freezing.  They also questioned it on thermodynamic grounds: “In fact, once fully frozen, it is difficult to create the right conditions to cause a thaw, since much of the incoming solar radiation would be reflected back by the snow and ice.” Antarctic rivers drain Antarctic lakes:  Many scientists had speculated that lakes under Antarctic ice might hold pristine clues to the early Earth, and exotic forms of life.  Now they may have to take into account a paper in Science1 that found evidence these lakes are connected and drain from one to another as the ice cover shifts.  Images from space show that these lakes act like lubricants and rapidly shift the highly-pressurized subglacial ice around.  They cited instances: “Large outbursts of subglacial water have been observed in coastal regions,” and “Antarctic subglacial water can move in large volumes between lakes, on short time scales and over long distances.”    In conclusion, they remark that the water movements they detected are “large, extensive, and temporally variable.”  Big changes were seen within just 2-3 years.  “These observations provide clues to understanding the stability of ice streams through their sensitivity to basal lubrication,” they said.  “The time scale for subglacial water transport (months to years) is short compared with that of other known drivers of glacial flow variability, suggesting a mechanism for more rapid changes in ice stream behavior than have previously been assumed.”It may be a hard sell, therefore, to claim that anything under the Antarctic remained stable for millions of years – or that we can know with any certainty what the Earth looked like before there were observers.1Fricker, Scambos, Bindschadler and Padman, “An Active Subglacial Water System in West Antarctica Mapped from Space,” Science, 16 March 2007: Vol. 315. no. 5818, pp. 1544-1548, DOI: 10.1126/science.1136897.Didn’t they ever hear of global warming?  Indeed, the science wars are heating up all over the world.(Visited 6 times, 1 visits today)FacebookTwitterPinterestSave分享0last_img read more

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Govt, mining companies to partner on improved housing

first_img14 August 2014 The government is to partner with the mining industry to further improve the housing and living conditions of mine workers in the country, Minister in the Presidency Jeff Radebe announced on Wednesday. Addressing the third annual Mining Lekgotla gala dinner at Gallagher Convention Centre in Midrand, Johannesburg, Radebe commended the mining sector for working with the government to convert single-sex miners’ hostels into family units. “We believe that this work should be continued with a clear vision of making these family units even more liveable and homely,” Radebe said, adding that mining, as a key economic driver in South Africa, should result in the creation of sustainable communities. “It is envisaged that government will drive the process of improving living conditions for mine workers, with financial support from mining houses.” He also challenged professionals in the mining sector to consider teaching mathematics and science to disadvantaged communities as part of their overall contributions to the development of mining communities. Radebe said the government would also be developing a mining industry initiative as part of Operation Phakisa, the recently launched South African version of the “Big Fast Results” methodology successfully applied by Malaysia, which aims to fast-track the delivery of priorities outlined in the National Development Plan. “We will be planning this Operation Phakisa [initiative] in consultation with all the key stakeholders, including the Chamber of Mines and organised labour.” Mining, Radebe said, remained key to South Africa’s economic growth, with an estimated total contribution to the country’s gross domestic product (GDP), including indirect and multiplier impacts and sectors that rely on mining activities, ranging between 15% and 18%. “It remains a critical source of investment. As a proportion of total gross fixed capital formation, mining’s share was at 12% in 2012,” he said, adding that mining commodities accounted for 46% of exports in the fourth quarter of 2013, while downstream mineral-related manufacturing exports account for another 14%. Radebe said the role of mining had been clearly defined in the recently released Medium Term Strategic Framework, the document that will guide the implementation of the National Development Plan (NDP) over the next five years. “The NDP [National Development Plan] envisages a vibrant economy, which still has the mining sector playing a crucial role. This includes exports and foreign direct investment, production of commodities for energy and/or manufacturing, beneficiation and procurement.” Source: SAnews.gov.zalast_img read more

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Today’s medal hunt: 141

first_imgARCHERYWomen’s: Recurve team. Men’s: Recurve teamATHLETICSMen’s: 110m hurdles; triple jump; hammer throw; decathlon 1500m. Women’s: 1500m; 400m; triple jump; 10,000mBADMINTONTeam eventSWIMMING/SYNCHRONISEDMen’s: 100m butterfly; 50m breaststroke; 100m backstroke; 200m individual medley.Women’s: 200m backstroke; 50m freestyle; 100m breaststroke; 400m freestyle; 50m backstroke; 4x100m freestyleSHOOTINGClay targetMen’s: Trap pairsWomen’s: Trap pairsPistol & small boreMen’s: 50m rifle 3 position pairs; 10m air pistol singles; 25m rapid fire pistol singlesTABLE TENNISWomen’s teamWEIGHTLIFTINGWomen’s 69kg. Men’s 85kgWRESTLINGWomen’s : Freestylelast_img

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History is within Team Lakay’s reach with 3 fighters featured in 1st ONE Japan card

first_imgTrump campaign, GOP groups attack Google’s new ad policy P2.5 B shabu seized in Makati sting, Chinese national nabbed This kind of notoriety just had to make the soft-spoken team patriarch Mark Sangiao talk with joy since his stable has the potential to not just be part of history but make it.“Of course I’m very proud and ecstatic that the first ONE card in Japan will feature three fighters from our team,” said Sangiao Thursday at Gloria Maris in Gateway for Team Lakay’s media lunch. “And I hope those three will win.”FEATURED STORIESSPORTSPrivate companies step in to help SEA Games hostingSPORTSUrgent reply from Philippine ‍football chiefSPORTSPalace wants Cayetano’s PHISGOC Foundation probed over corruption charges Photo by Tristan Tamayo/INQUIRER.netMANILA, Philippines—Team Lakay continues to make history.ONE Championship is set for its first fight card in Japan on March 31 for ONE: A New Era, and three of the fighters that will set foot at Ryogoku Kokigukan hail from the stable based on Baguio City.ADVERTISEMENT “If we can conquer Japan then it’ll certainly be part of history because Japan is one of the birthplaces of martial arts,” said Sangiao. “There are great martial artists there and they’re also technical.”“We will prove to the world that we’re one of the best when it comes to martial arts.”Sports Related Videospowered by AdSparcRead Next PBA: Phoenix clobbers Alaska to book playoff berth ONE World lightweight champion Eduard Folayaing will defend his title against Japan’s Shinya Aoki in the card’s main event while Kevin Belingon will put his ONE World bantamweight championship on the line against Bibiano Fernandes.Danny Kingad is also in the card as he takes on Andrew Leone in the quarterfinals of the ONE Flyweight World Grand Prix.Sangiao is relishing the chance for Team Lakay to create history in Japan if all of his fighters win in the land regarded as one of the origins of martial arts.ADVERTISEMENT 1 dead, 3 injured in Quezon road crash Don’t miss out on the latest news and information. P2.5 B shabu seized in Makati sting, Chinese national nabbedcenter_img SEA Games hosting troubles anger Duterte MOST READ View comments LATEST STORIES Lacson backs proposal to elect president and vice president in tandem Private companies step in to help SEA Games hosting Hong Kong tunnel reopens, campus siege nears end PH underwater hockey team aims to make waves in SEA Games PLAY LIST 02:42PH underwater hockey team aims to make waves in SEA Games01:44Philippines marks anniversary of massacre with calls for justice01:19Fire erupts in Barangay Tatalon in Quezon City01:07Trump talks impeachment while meeting NCAA athletes02:49World-class track facilities installed at NCC for SEA Games02:11Trump awards medals to Jon Voight, Alison Krausslast_img read more

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