blackstoneharness.com

Thursday, June 23, 2011

NASA’s Cassini–Huygens spacecraft has discovered evidence for a large-scale saltwater reservoir beneath the icy crust of Saturn’s moon Enceladus. The data came from the spacecraft’s direct analysis of salt-rich ice grains close to the jets ejected from the moon. The study has been published in this week’s edition of the journal Nature.

Data from Cassini’s cosmic dust analyzer show the grains expelled from fissures, known as tiger stripes, are relatively small and usually low in salt far away from the moon. Closer to the moon’s surface, Cassini found that relatively large grains rich with sodium and potassium dominate the plumes. The salt-rich particles have an “ocean-like” composition and indicate that most, if not all, of the expelled ice and water vapor comes from the evaporation of liquid salt-water. When water freezes, the salt is squeezed out, leaving pure water ice behind.

Cassini’s ultraviolet imaging spectrograph also recently obtained complementary results that support the presence of a subsurface ocean. A team of Cassini researchers led by Candice Hansen of the Planetary Science Institute in Tucson, Arizona, measured gas shooting out of distinct jets originating in the moon’s south polar region at five to eight times the speed of sound, several times faster than previously measured. These observations of distinct jets, from a 2010 flyby, are consistent with results showing a difference in composition of ice grains close to the moon’s surface and those that made it out to the E ring, the outermost ring that gets its material primarily from Enceladean jets. If the plumes emanated from ice, they should have very little salt in them.

“There currently is no plausible way to produce a steady outflow of salt-rich grains from solid ice across all the tiger stripes other than salt water under Enceladus’s icy surface,” said Frank Postberg, a Cassini team scientist at the University of Heidelberg in Germany.

The data suggests a layer of water between the moon’s rocky core and its icy mantle, possibly as deep as about 50 miles (80 kilometers) beneath the surface. As this water washes against the rocks, it dissolves salt compounds and rises through fractures in the overlying ice to form reserves nearer the surface. If the outermost layer cracks open, the decrease in pressure from these reserves to space causes a plume to shoot out. Roughly 400 pounds (200 kilograms) of water vapor is lost every second in the plumes, with smaller amounts being lost as ice grains. The team calculates the water reserves must have large evaporating surfaces, or they would freeze easily and stop the plumes.

“We imagine that between the ice and the ice core there is an ocean of depth and this is somehow connected to the surface reservoir,” added Postberg.

The Cassini mission discovered Enceladus’ water-vapor and ice jets in 2005. In 2009, scientists working with the cosmic dust analyzer examined some sodium salts found in ice grains of Saturn’s E ring but the link to subsurface salt water was not definitive. The new paper analyzes three Enceladus flybys in 2008 and 2009 with the same instrument, focusing on the composition of freshly ejected plume grains. In 2008, Cassini discovered a high “density of volatile gases, water vapor, carbon dioxide and carbon monoxide, as well as organic materials, some 20 times denser than expected” in geysers erupting from the moon. The icy particles hit the detector target at speeds between 15,000 and 39,000 MPH (23,000 and 63,000 KPH), vaporizing instantly. Electrical fields inside the cosmic dust analyzer separated the various constituents of the impact cloud.

“Enceladus has got warmth, water and organic chemicals, some of the essential building blocks needed for life,” said Dennis Matson in 2008, Cassini project scientist at NASA’s Jet Propulsion Laboratory in Pasadena, California.

“This finding is a crucial new piece of evidence showing that environmental conditions favorable to the emergence of life can be sustained on icy bodies orbiting gas giant planets,” said Nicolas Altobelli, the European Space Agency’s project scientist for Cassini.

“If there is water in such an unexpected place, it leaves possibility for the rest of the universe,” said Postberg.

Friday, December 10, 2010

Leaked diplomatic cables between Australia and the US Secretary of State, Hillary Clinton, have raised controversy in the Australian community. The documents were released by the whistle-blowing website Wikileaks. The cables between the then prime minister of Australia, Kevin Rudd, and the US Secretary of State, Hillary Clinton, revealed that China may need to be forced to integrate into the international community. The secret documents also contained information of a conversation between Clinton and Rudd in Washington. In the interview, Rudd stated that China was “paranoid” about Taiwan and Tibet.

The sensitive documents may place a strain on diplomatic relations between Australia and China. Despite this, Kevin Rudd reassured the public that the “robust” relationship between Australia and China wouldn’t sustain any substantial damage to the relations between the two countries. At this stage, Prime Minister Julia Gillard has provided no further comment on the matter, other than to ensure that the relationship between China and Australia would allow opinions to be expressed without any threat to either side.

At the heart of the leaks is Australian founder, Julian Assange. Wikileaks have now released 821 of their promised 251,287 US diplomatic cables. The cables are being released on a stage-by-stage basis. Earlier this week, Assange was arrested on suspicion of rape in London under a Swedish arrest warrant placed on him from a court in Stockholm on November 18.

Thursday, August 2, 2007

The Interstate 35W Mississippi River eight-lane bridge in Minneapolis, Minnesota has collapsed on both sides of the highway over the Mississippi River during rush hour.

Previous reports indicated at least nine people had died, but Minneapolis police revised this to four during a 7:30 a.m. (local time) press conference. Tim Dolan, the Minneapolis Police Chief later stated that “several [adding to the four] people are confirmed dead at the scene,” but would not elaborate on how many. At least 79 have been injured and at least 8 are still missing, still believed to be in the rubble.

The road was busy with bumper-to-bumper traffic in four lanes when the entire 1907 foot (581 m) steel arch bridge collapsed. At least 50 cars were traveling on the bridge, including a school bus. The Red Cross said that 60 children were aboard a school bus, and that ten of those were admitted to a hospital.

The entire length of the bridge over the river collapsed at 6:05 p.m. CDT (UTC-5). The bridge, built in 1967, cleared the water level by 64 feet; the deck surface and pavement were considerably higher.

Reports say that people may be trapped in the water. Further, “many voids may contain survivors, but we cannot search those voids until it’s safe,” said Jim Clack, Minneapolis Fire Chief, during a press conference.

“One has died from drowning,” said a doctor from the medical center during an 8:00 pm press conference, who also said that so far 22 are in “yellow condition” and at least six are in “critical condition.”

Minneapolis officials have stated during an earlier press conference that “people are being sent downtown and all survivors are off the bridge. We are seeking help from the Red Cross.” and “[…]at least 60 children are receiving trauma care some with severe injures, some with minor injuries.”

Most of the injured have been received by Hennepin County Medical Center in downtown Minneapolis for medical treatment. Area hospitals are requesting all off duty staff and all Minneapolis ambulances to report. Residents are being encouraged to stay away from the area to let emergency crews do their work.

It is not known what caused the collapse, but there was construction being performed on the bridge’s road surface which included the use of jackhammers and the FBI has ruled out terrorism.

“Although it is much too early to make any determination of the cause, we have no reason at this time to believe there is any nexus to terrorism,” said Paul McCabe, an FBI spokesman.

In 2001 a stress inspection was done and Minnesota Department of Transportation stated that the bridge “should not have any problems with fatigue cracking in the foreseeable future.”

Typically an eight-lane bridge, the bridge was reduced to four lanes (two in each direction) during the current construction. The Minnesota Department of Transportation (Mn/DOT) had just announced overnight lane reductions on the bridge to one lane in each direction for the late evening hours of July 31 and August 1.

Friday, April 1, 2005File:Map of USA highlighting Texas.png

Witnesses say a truck was idling near the scene of an explosion at a Texas refinery which killed 15 and injured over 100 others on March 23, according to U.S. Chemical Safety and Hazard Investigation Manager Bill Hoyle.

“Witnesses saw vapor in the area of the truck and observed the engine begin to rev up and race,” Hoyle’s statement said. “This behavior by a diesel engine indicates the presence of a flammable atmosphere entering the air intake. A driver reported trying to shut off the engine but was unable to do so.” Hoyle’s statement continued, “There are multiple possible sources of ignition in an operating refinery unit and we have made no determination about the ignition source at this time.”

The investigation has been delayed by BP and Occupational Safety & Health Administration officials, who are trying to preserve evidence at the site for their investigation. They are also concerned about further injuries from hazards left over from the explosion, such as falling debris and unstable structures. The Environment Protection Agency also detected benzene in the atmosphere over the plant, which was treated with a layer of foam.

BP has retained control of the plant since the March 23 accident. Police arrived quickly the day of the explosion, but left after the initial emergency was over.

“Our officers could respond over there, but they don’t have a clue,” Texas City police Sgt. Curtis Pope told the Houston Chronicle. “The fact is they have chemical and equipment hazards. We don’t know the chemicals.”

Thursday, August 5, 2010

File:Google Wave.jpg

Google has decided to retire the Google Wave social-networking service after one year, citing lack of user adoption.

Urs Hölzle, Google senior vice president for operations, said in a blog post that “Wave has not seen the user adoption we would have liked. We don’t plan to continue developing Wave as a stand-alone product.” Hölzle also said that as a “web app for real time communication and collaboration, it set a high bar for what was possible in a Web browser. We weren’t quite sure how users would respond to this radically different kind of communication.” Google says that it will continue the service until the end of the year.

In May 2009, Google launched Wave as a private beta. A year later, it became open to the public. Wave is an email service that integrates social media features and capabilities into emailing. It integrates IM-like features into its service. The company released components of Google Wave as open source for those to create a similar service. “The central parts of the code, as well as the protocols that have driven many of Wave’s innovations, like drag-and-drop and character-by-character live typing, are already available as open source, so customers and partners can continue the innovation we began. In addition, we will work on tools so that users easily “liberate” their content from Wave,” Google said.

Friday, February 5, 2010

Global stock markets fell steeply on Thursday on investor concerns about the growing sovereign debts of European Union member states Greece, Portugal, and Spain. A report of a rise in weekly jobless claims in the United States contributed to the market gloom. The MSCI World index fell the most in over nine months. Currency and commodities markets also posted major moves.

The euro fell more than one percent against the US dollar to an eight-month low; against the yen it fell 2.2%, approaching a one-year low. The price of crude oil fell 5% to US$73.14 per barrel and gold slid 4.4% to US$1,063 per ounce.

Greece’s Prime Minister, George Papandreou, announced an austerity program, but that is now threatened by plans by the largest trade union for a national strike. In 2009, Greece’s budget deficit was 12.7% of the nation’s gross domestic product (GDP). Papandreou’s plan called for that to drop to 3% by 2012.

Gary Jenkins of Evolution Securities told the Financial Times, “[t]he risk aversion trade is back on as the debt problems of Europe are for the first time bringing down global markets. Corporate earnings may come in strongly [in the US], but investors are more concerned about the possible default of a sovereign European nation.”

“This is a sovereign problem, and it’s hitting everything,” said Keith Springer of Capital Financial Advisory Services to Reuters. “If other European countries are having trouble like Greece, then it’s a big problem for banks, and the banks are the foundation for everything. European banks will be in trouble and that will carry over to all stocks.”

“The focus is shifting toward Spain and Portugal, where the deficit-reduction plans have been far less ambitious than Greece,” said Kornelius Purps of UniCredit Markets & Investment Banking to Bloomberg.

Concerns in Portugal centered on political tension surrounding a regional spending bill. In Spain, the source of worry was reportedly because the government backed down from promised pension reform.

European Central Bank President Jean-Claude Trichet sought to ease investor fears, in part by noting that the deficit in the US is expected to hit 10% of GDP in 2010, compared with about 6% in the eurozone. He said that he was “confident” that Greece is moving in the right direction.

Trichet did admit that it is of “paramount importance” for Greece, Portugal and Spain to get their public finances under control.

Tuesday, September 13, 2011

The Council of the European Union voted yesterday to extend the term of copyright on sound recordings by twenty years, from 50 years to 70, preventing a number of early recordings of 1960s rock musicians including The Beatles from entering the public domain. The 1962 hit “Love Me Do” would have entered the public domain in 2012 if this legislation had not been introduced. EU member states have to enact the copyright extension within two years.

The news was welcomed by representatives of the recording industry and by some recording artists. Cliff Richard has campaigned for term extension. Mick Jagger from the Rolling Stones said the decision was “obviously advantageous” to performers, and Bjorn Ulvaeus from Abba welcomed the continued control over the group’s recordings: “Now I won’t have to see Abba being used in a TV commercial”. Geoff Taylor from the British Phonographic Industry said “[a]n exceptional period of British musical genius was about to lose its protection. As a matter of principle, it is right that our musicians should benefit from their creativity during their lifetimes, and that they should not be disadvantaged compared to musicians in other countries.”

Extension of the copyright term also has critics. Jim Killock, from the British digital rights advocacy group the Open Rights Group (ORG), said the move “puts money into the pockets of big labels” but will be “unlikely to benefit smaller artists and it will mean that a lot of sound recordings that are out of print will stay out of print”. Singer Sandie Shaw, of the Featured Artists’ Coalition, said the move would be “extremely good news for record companies and collection agencies, but bad news for artists” and would lead to artists having “20 more years in servitude to contracts that are no longer appropriate to a digital age”.

The extension to 70 years is less than that EU Commissioner Charlie McCreevy proposed in 2008. At that time, Wikinews interviewed Eddan Katz of the Electronic Frontier Foundation (EFF) and Becky Hogge, then Executive Director of ORG, in Brussels. The two organisations were gathering like-minded groups to oppose harmonisation with the US’s 95-year term. Characterising the sought extension as “Cliff Richard’s pension”, Hogge asserted, “[w]hat you’ve got at the end of the day with copyright term extension is basically […] rent seeking by special interest groups lobbying governments to change the law in order that they may economically gain directly.”

Two reviews of intellectual property rights in Britain have concluded it would not be economically beneficial to extend copyright terms on sound recordings. The Gowers Review of Intellectual Property in 2006 concluded extension of the copyright term would “negatively impact upon consumers and industry”. The Hargreaves Review of Intellectual Property and Growth in 2011 concluded it would be “economically detrimental”. A study conducted by Bournemouth University’s Center for Intellectual Property Policy and Management concluded 72% of the economic benefits of the term extension would go to record labels, with 28% going to artists, only 4% of which are going to less successful artists.