Author: Admin

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, March 20, 2009

Following the Pilkhana massacre which occurred February 25 and 26 leaving 74 dead and the inferno at the Bashundhara City shopping mall complex March 13 leaving seven dead, Prime Minister Sheikh Hasina said security measures are being tightened countrywide across Bangladesh.

Fire drills will be enacted at all key-point installations (KPI). Fire fighting systems will be examined by the fire brigade and the public works department (PWD) to ensure functionality. Security measures will be enhanced supplementing areas under private security such as at the Bashundhara City Complex.

The Fire Service and Civil Defence Department requires modernization and needs new equipment to fight fires past the sixth floor of buildings. The Fire Brigade says it needs turntable ladders, snorkels, foam-tenders, lighting units, emergency tenders, fireproof uniforms, and rescue ropes for fire fighting and rescue operations. Transportation to fires is also an issue due to narrow roads, low electrical wires and congestion.

The Bangladesh National Building Code requires fire fighting equipment installed in buildings over seven floors. This code is to be monitored by authorities to ensure compliance with the new guidelines and to make sure buildings are being maintained.

The Bashundhara City Complex opened Monday for shoppers two days after Friday’s blaze. A probe is underway to determine the cause of the fire and to assess structural damage.

Loss of life was minimized as the blaze broke out on a Friday, the beginning of the weekend in Bangladesh, so offices in the upper floors were empty. The lower eight floors are used for shopping and the upper floors are all Bashundhara Group offices.

The mall is valued at Tk 7.0 billion (US$100 million). It is not known if the complex is covered by fire insurance.

It is estimated that it will take over two years to rebuild the area damaged by flames which were burned down to a skeleton. Bashundhara City’s technical advisor, Latifur Rahman, estimated damages at Tk 2.0 billion (US$29m).

Only one television cameraman has been allowed in to film the burnt area. None of the 2,500 shops, cinemas or cafes were burnt by the inferno. The seventh and eighth floors still experience smoke damage, and there was water damage to merchandise.

A three member committee is currently investigating the cause of the fire which will consist of Iqbal Khan Chowdhury, joint secretary of the ministry, representatives of the police, IGP Noor Muhammad, and fire brigade, Director General Abu Nayeem Md Shahidullah. The committee is required to report within the week with their findings. The forensics department is also sifting through the burnt remains.

The Dhaka Chamber of Commerce and Industries has also formed a committee which has begun interviewing witnesses and recording their testimony alongside the government committee.

It has been discovered that 150 closed circuit cameras were not being used when the fire started. Another mystery is why the mall fire fighting system has been found unused.

“In the shopping mall there is an ultra-technology elevator which runs even without electricity but we have found that locked,” Iqbal Khan Chowdhury, joint secretary (Police) of the home ministry, said. “Why the fire burnt so fiercely is a matter to think. We have to see if there was any incendiary substance there. These matters seem to be mysterious.”

Mall management has been asked to submit substances and items which would have been in the upper floors when the fire started. The fire erupted on the 17th floor and spread quickly to the two floors above and engulfed the three floors below. The aerial ladders belonging to the Fire Service and Civil Defence reached as high as the 13th floor of the 21-storey building.

Videos have been sent to the United States (US) for examination to assist in determining the cause of the fire and to help in the damage assessment. Experts from the US are expected to arrive soon.

Firefighters were brought to the rooftop of the 20-storey tower by helicopter. The only fatality in this operation was Baki Billa, a firefighter of Bashundhara City firefighting department, who fell when climbing down a rope from a helicopter to the roof of the building. Three other firefighters made the transition safely. At this same time, the chief security officer was safely rescued by the Bangladesh Air Force helicopter, a Bell 212. Six security officers of the complex also lost their lives.

Friday, November 25, 2011

U.S. Democratic Party presidential candidate Darcy Richardson of Florida took some time to answer a few questions from Wikinews reporter William S. Saturn.

Richardson, 55, is a political activist that helped form the New Democrats in 1989 and founded the progressive Battleground Blog earlier this year. He is also a political historian, and has authored six books covering third parties and presidential elections, including A Nation Divided: The 1968 Presidential Campaign (2002). His current work, The Spirit of ’76: Eugene McCarthy’s Struggle for Open Politics, chronicles the late Democratic Senator Eugene McCarthy’s 1976 presidential campaign for which he volunteered. Richardson admires McCarthy, and served as manager for his 1988 presidential run. Recently, Richardson advised Brian Moore’s Socialist Party USA presidential campaign in 2008.

In addition, Richardson himself has sought political office, albeit unsuccessfully. In 1980, he ran for Pennsylvania Auditor General, and in 1988, vied for one of Pennsylvania’s U.S. Senate seats as a member of the Consumer Party. Last year, he ran for Lieutenant Governor of Florida as the running mate of gubernatorial candidate Farid Khavari.

Richardson has criticized President Barack Obama’s policies for being too similar to those of former President George W. Bush. He hoped to convince several prominent progressives to challenge Obama in the Democratic primaries, but none were available to do so. Last month, Richardson decided to begin a campaign himself and announced through his Battleground Blog that he would challenge Obama in the Democratic Party primaries as a progressive candidate. So far, he has qualified for the New Hampshire primary in January and the Missouri primary in February. In an interview with the Independent Political Report, Richardson proclaimed his campaign slogan as “no fourth term for George W. Bush.”

Friday, December 30, 2005

The Australian Centre for Languages, a company which has a multi-million dollar contract with the Australian government to provide refugee services, has been accused of breaching its duty of care following the death of a chronically ill child and allegations of failing to provide three women in their care with food.

Friday, October 10, 2008

In an attempt to speak with as many candidates as possible during the 2008 Canadian federal election, Wikinews has talked via email with David Sparrow. Sparrow is a candidate in Ontario’s Don Valley West riding, running under the New Democratic Party (NDP) banner. The riding was set to vote in a by-election on September 22, 2008, following the resignation of John Godfrey, but Stephen Harper’s sudden election call nulled that effort.

Also running in the Toronto riding are Liberal Rob Oliphant, Conservative John Carmichael, Green Georgina Wilcock, and Communist Catherine Holliday.

The following is an interview with Sparrow, conducted via email. The interview is published unedited, as sent to Wikinews.

Thursday, August 20, 2009

According to Iraqi police, at least 95 people have been killed and half a thousand wounded after six explosions in Iraq’s capital of Baghdad on Wednesday.

Eyewitness reports say that two main attacks targeted the finance and foreign ministries. Police sources say that the blasts, which were caused by vehicles filled with explosives, all took place within several minutes.

Major General Qassim Atta, spokesman for the national armed forces’ operation in the capital, said that “a truck bomb went off near the Salhiyeh intersection and it caused casualties and a number of civilian cars were destroyed. We accuse the Baathist alliance of executing these terrorist operations.”

As a result of the attacks, Iraqi prime minister Nouri al-Maliki called for a security review. “The criminal operations that happened today no doubt call for a re-evaluation of our plans and our security methods to face the terrorist challenges,” he said.

The attacks are the deadliest in Baghdad since June 24, when 62 people died after a bomb on a motorcycle detonated.

Wednesday, February 27, 2008

“Five singers, one drummer. No guitars, no bass, no keyboards but nevertheless an unbelievable melodic metal experience.”

That’s how the official website of van Canto describes the band. Hailing from Germany, van Canto are what is called an a capella metal band, the pioneers of this new genre.

The band released their debut, A Storm to Come, in December 2006. Exactly a year later, van Canto announced a global signing to Gun Records/Sony BMG, and their debut was released worldwide on December 14.

Van Canto are now experiencing considerable success. They recently provided support for Finnish symphonic power metal band Nightwish, as well as receiving a slot at the internationally famous Wacken Open Air festival in Germany. The prestigious event sees them sharing the bill with acts such as Hatebreed, Sonata Arctica, As I Lay Dying, Soilwork, Children of Bodom, Nightwish, Lordi and headline act Iron Maiden.

Van Canto’s second album will be recorded across this month and next, with famed producer Charlie Bauerfeind, although no release date has yet been confirmed.

In light of recent events, van Canto member and founder Stefan Schmidt has given the band’s first interview in English, all previous interviews being in German or Italian. Wikinews now exclusively brings you that interview below.