Saturday, September 10, 2011

A 182-page report issued September 1 by the United States National Research Council warns that the amount of debris in space is reaching “a tipping point”, and could cause damage to satellites or spacecraft. The report calls for regulations to reduce the amount of debris, and suggests that scientists increase research into methods to remove some of the debris from orbit, though it makes no recommendations about how to do so.

NASA sponsored the study.

A statement released along with the report warns that, according to some computer models, the debris “has reached a tipping point, with enough currently in orbit to continually collide and create even more debris, raising the risk of spacecraft failures”. According to the Satellite Industry Association, there are now about 1,000 working satellites in Earth orbit, and industry revenues last year were US$168 billion (£104.33 billion,€119.01 billion).

The debris consists of various objects, such as decommissioned satellites and exhausted boosters, but the vast majority of the particles are less than one centimetre across. 16,094 pieces of debris were being tracked as of July, although estimates put the current number at over 22,000. The total number of fragments is thought to be as high as tens of millions. While most of the debris is very small, some of it is travelling at speeds as high as 17,500 mi h^-1 (28,164 km h^-1; 7,823.3 m s^-1).

The International Space Station sometimes has to dodge larger fragments, and in June its crew was forced to prepare to evacuate due to a close encounter with debris.

The UK Space Agency told Wikinews that space flight “is likely to be made more difficult” by the debris. However, communications will “[n]ot directly” be affected, “but if the GEO ring became unusable, there is no other altitude at which objects appear [‘]geo-stationary[‘] and so all antennas on the ground would then have to move in order to track the motion of the satellites”.

Donald J. Kessler, the lead researcher and former head of NASA’s Orbital Debris Program Office, said that “[t]he current space environment is growing increasingly hazardous to spacecraft and astronauts,” and suggested that “NASA needs to determine the best path forward for tackling the multifaceted problems caused by meteoroids and orbital debris that put human and robotic space operations at risk.”

Two events are thought to be the largest individual sources of space debris. Kessler said that “[t]hose two single events doubled the amount of fragments in Earth orbit and completely wiped out what we had done in the last 25 years”.

The first of these was a controversial 2007 Chinese anti-satellite weapon test, which smashed the decommissioned weather satellite Fengyun-1C into approximately 150,000 fragments over a centimetre in size—making up roughly twenty percent of all tracked objects—537 miles above the Earth’s surface.

The Chinese government has so far failed to respond to Wikinews’s queries regarding the incident.

The other is a 2009 collision between twelve-year-old active satellite Iridium 33 and the defunct Russian Strela-2M satellite Kosmos-2251—both weighing in excess of 1,000 lbs (454 kg)—that occurred 490 miles over Siberia, the first such collision. The Iridium satellite was replaced within 22 days, according to Iridium Communications, who operated it.

In a statement released to Wikinews, Iridium Communications said that they “received no warning of the impending collision. Although commercial projections of close encounters (commonly called conjunctions) were available, the accuracy of those projections was not sufficient to allow collision avoidance action to be taken.” They also made the assurance that the Air Force Space Command and United States Strategic Command now provide them with information through the Joint Space Operations Center, and that “when necessary, [they] maneuver [their] satellites based on this information to avoid potential collisions. [They] believe this is a substantial first step in better information sharing between the government and industry and support even more robust interaction which can provide better and more efficient constellation operation.”

Iridium expressed their support for “[l]ong-term investment to improve Space Situational Awareness” and “[i]mproved information sharing between industry and the U.S. government”, as well as more “[g]overnment support for policy and processes which would permit sharing of high-accuracy data as required to allow reliable assessment and warning” and “[i]ncreased cooperation between the government and U.S. and foreign commercial operators.”

They maintained that “the Iridium constellation is uniquely designed to withstand such an event. Because of the resilient and distributed nature of the Iridium constellation, the effects of the loss of a single satellite were relatively minor”, and that “any other system, commercial or military, which experienced the loss of a satellite, would have suffered significant operational degradation for a period of months if not years.” Nonetheless, the company is “concerned over the increasing level of risk to operations resulting from the debris in space.”

The report makes more than thirty findings, and more than twenty recommendations to NASA. None of the recommendations regard how to clean up the debris. However, it does cite a report by the Defense Advanced Research Projects Agency (DARPA), which suggested various possible techniques for catching and removing space debris, such as magnetic nets.

However, international law does not allow one country to collect another’s debris. George J. Gleghorn, vice chair of the committee, observed that “[t]he Cold War is over, but the acute sensitivity regarding satellite technology remains”.

The debris will, in time, be pulled into the earth’s atmosphere—where it will burn up—by gravity, but more debris is being created faster than this can happen.

The report recommends collaborating with the United States Department of State on “economic, technological, political, and legal considerations.” As already mentioned, international law does not allow one country to collect another’s debris.

According to the report, “[t]he problem of space debris is similar to a host of other environmental problems and public concerns characterized by possibly significant differences between the short- and long-run damage accruing to society … Each has small short-run effects but, if left unaddressed, will have much larger impacts on society in the future.”

A spokesperson for the UK Space Agency told Wikinews that the organisation “does not have any plans to get directly involved with [the clean-up] initiative but through its involvement with NASA in the Inter-Agency Space Debris Coordination Committee, it is conducting studies to identify which objects present the biggest hazard and how many objects may need to be removed and from where.” It says that the viability of such an operation is “a question of treating the symptom or the cause of the problem. Building more physical protection is costly and if the environment deteriorates too far, becomes unviable. It is best to treat the root cause, the presence of debris in orbit, and remove the large objects before they can break up into many thousands of uncontrolled fragments capable of destroying a satellite on impact.”

The spokesperson also pointed out that “[u]nder current licensing regimes (such as in the UK), countries are now obliging operators to remove satellites from crowded regions of space at the end of operational life”.

Saturday, July 9, 2005

After a press conference in London from the Metropolitan Police and Transport for London, more details are emerging about the attacks in London on Thursday.

Data from the Underground system’s power and control systems have revealed that all three bombs went off within 50 seconds of each other, at 8.50am, with the managing director of Transport for London, Tim O’Toole saying the bombs went “bang bang bang, very close together”.

The first bomb to detonate was on the Liverpool Street train soon after it left for Aldgate on the Circle line, seconds before the others. The blast tripped out the power system, visible in the control room. The first call the police received that morning reported “a bang” at Aldgate East, coming within a minute of the blast.

The Edgware Road train, leaving for Paddington and also on the Circle, exploded opposite a train coming from the other direction, making people think at first that it was a derailment. The first call to the Police spoke not of an explosion, but of a person falling under the wheels of the train. The confirmation of a bomb did not come until 9.17am, but by that time the emergency services were already on scene.

Transport for London’s new TrackerNet software is fully opertational on the Circle line, which allows for precise tracking of trains, but is not yet fully installed on the Piccadilly line. The first indication of the Piccadilly line bomb was when the tunnel telephone system wires were cut by the blast, an event logged by other software. The cutting of the lines then tripped out the track current. The tunnel itself suffered only slight damage and is safe, but the train – which was packed with commuters heading for Russell Square – is very badly damaged.

London Underground declared a ‘code Amber’ within minutes, moving trains to platforms and opening all doors. A ‘code Red’ – full evacuation – was set at around 9.15am. O’Toole described the decision to evacuate as being “very grave, not taken lightly”. When questioned as to whether everything possible had been done on the day to save lives, the managing director of Transport for London was “very proud” of the choices made that morning.

As investigations continue, all bodies have been removed from the sub-surface Circle line trains, but the carriages themselves are still in situ while a painstaking forensic investigation takes place.

Currently, work is on-going to retrieve bodies and forensic evidence from the carriage of the train in the deep tunnel of the Piccadilly line near King’s Cross. Teams of rescue workers looking for human remains are working alongside forensics experts in a “meticulous” search to find evidence.

Conditions are described as being very difficult, with high temperatures and lots of dust. Work was halted over Friday night when conditions became too bad, and resumed this morning. Efforts have been made to improve the ventilation.

Work will continue throughout tonight and possibly into Sunday. The exact number of bodies still in the wrecked carriage is unknown.

Access from King’s Cross is impossible, so workers are taking the longer route from Russell Square station to get to the front of the train.

Police have revealed that the bombs were ‘high explosives’ – not homemade. However they are declining to be specific about their composition as the information could be useful when they interrogate suspects.

Police will not confirm or deny if any parts of a timer have been found, but have said that “any device will now be in a million pieces”. Police believe the use of timers more likely than suicide bombings as the blasts were so closely timed, but are not ruling out anything.

Wednesday, October 22, 2008

Monday saw the latest edition of the vetted version of Wikipedia, which is aimed at educational use, go quietly online. The extensively revised version covers over five thousand topics, targeting the eight to seventeen years age group. Partnerships with the Shuttleworth Foundation and the Hole in the Wall project will see it distributed in South Africa and India as well as copies being available globally via the offices of SOS Children UK’s umbrella organisation, SOS Kinderdorf worldwide.

First launched in 2006 as a 4,000 article edition, the extract of Wikipedia has employed hi-tech distribution methods, as well as offering a website version which has steadily climbed up in ranking to above other reviewed Wikipedia rivals and copies; the 2007 version was available on the BitTorrent peer to peer network to keep distribution costs down and was equivalent to a fifteen-volume printed encyclopedia. Monday’s release is compared to a twenty-volume print edition.

Key to the process for selecting articles is the English National Curriculum and similar educational standards around the world. The initial vision was to bring this wealth of knowledge to schools where access to the Internet was poor or unavailable, but copies of Wikipedia for Schools can be found on many first world school intranets and web servers. Among the compelling reasons to adopt the project are the vetting and additional study materials which overcome the oft-publicised concerns many educators have with the million article plus Wikipedia that anyone can edit.

In today’s press release announcing the launch, Wikimedia Foundation Executive Director Sue Gardner expressed delight at seeing the project bring out a new version, “Our goal is to make Wikipedia accessible to as many people as possible around the world, and SOS Children is a great partner that helps us make that happen. Wikipedia is released under a free content license so that individuals and institutions can easily adapt, reuse and customize its content: we encourage others, like SOS Children, to do exactly that.”

Running 192 schools in the developing world, SOS Children sees Wikipedia for Schools as a key piece in fulfilling the educational aspect of their mission. SOS Children’s Chairwoman, Mary Cockcroft gave us an introduction and, a Wikipedia administrator himself, the charity’s CEO Andrew Cates spoke to Wikinews at length about the project.

You are part of SOS-Kinderdorf International, can you explain a little about how this works in terms of distributing funds raised in the UK and involving UK citizens in work outside the country?

Mary Cockcroft: SOS Children[‘s Villages] is a “club” of member charities in 130 countries helping orphans and vulnerable children. The club elects SOS-Kinderdorf International as secretary. SOS is a large organisation whose members in aggregate turned over $1bn in 2007, and whose projects include owning and running 192 schools and family-based care for 70,000 children. However much of these funds are raised locally, with for example the member charities in each of India, Pakistan and South Africa raise considerably more funds in their own country than SOS UK does from the UK. Nonetheless SOS Children UK principally raises funds to finance projects in the developing world, and has only financially small projects in the UK (such as the Schools Wikipedia, which is very low cost because of extensive use of volunteers). This year we expect about 80% of our UK income will leave the UK for overseas SOS associations, and some of the remaining 20% will pay for project oversight. We do not spend money in the UK on Direct Mail or TV advertising. Our UK office is involved in overseeing projects we finance and a small number of high-skilled volunteers from the UK help overseas. However around 98% of SOS staff worldwide are local nationals, as are most volunteers.

((WN)) How much work does the UK charity actually carry out within the home country? Are there failings within the government system for orphans and other needy children that you feel obliged to remedy?

MC: We are deeply unhappy about the situation of children in out-of-home care in the UK. However our care model of 168 hour-a-week resident mothers does not fit with the UK philosophy for children without parental care. Internationally SOS always has a policy of sharing best practice and we are working to improve understanding of our way of working, which appears to us to have far better outcomes than the existing one in the UK. Ultimately though the legal responsibility for these children lies with government and we cannot remedy anything without their invitation.

((WN)) Who first came up with the idea of doing a vetted Wikipedia extract? What was the impetus? Was it more for the developing world than first world?

Andrew Cates: I honestly cannot remember who first suggested it, but it came from somewhere in the Wikipedia community rather than from the charity. The original product was very much pitched at the developing world where the Internet is only available if at all over an expensive phone line. I worked in West Africa 1993-1996 and I know well at how thirsty for knowledge people are and how ingenious they will be in overcoming technical obstacles if the need for infrastructure is removed.

((WN)) In reading past year’s announcements there’s some pride in the project being picked up and used in the first world, was this expected or a pleasant surprise?

AC: It was a pleasant surprise. I don’t think we had realised what the barriers schools faced in using the main Wikipedia were. It isn’t just pupils posting material about teachers or meeting strangers: the “Random Article” button on every page could potentially deliver an article on hardcore porn. We had already started when discussion broke on banning Wikipedia from classrooms and I am sure we benefited from it.

((WN)) Can you give an outline of the selection and vetting process? Is it primarily Wikipedians working on this, or are people from the educational establishment brought in?

AC: It was a long and painful process, even with a really good database system. Articles were taken into the proposal funnel from three main sources: direct proposals for inclusion from Wikipedians, lists which came from the Release Version team and proposals drawn up from working through National Curriculum subjects by SOS volunteers. In a few cases where we felt articles were missing we asked the community to write them (e.g. Portal:Early Modern Britain, which is a curriculum subject, was kindly written just for us): These “proposals” were then looked at by mainly SOS volunteers (some onwiki, some offline). Our offices are in the middle of Cambridge and we get high quality volunteers, who skim read each article and then compared two versions from the article history by credible WP editors a significant period apart (this picks up most graffiti vandalism which runs at about 3% of articles). Once they had identified a “best” version they marked any sections or text strings for deletion (sections which were just a list of links to other articles not included, empty sections, sex scandals etc). A substantial sample of each volunteers work was then doubled checked for quality by one of two office staff (of whom I was one). We then have a script which does some automated removals and clean ups. Once we had a selection we posted it to relevant wikiprojects and a few “experts” and got any extra steers.

((WN)) Will you be making use of BitTorrent for distribution again this year? Was it a success in 2007?

AC: BitTorrent was a bit disappointing in that it got us the only substantial criticisms we received online. A lot of people find it too much effort to use. However for the period we offered a straight http: download we had huge problems with spiders eating vast bandwidth (the file is 3.5G: a few thousand rogue spider downloads and it starts to hurt). As per last year therefore our main two channels will be free download by BitTorrent and mailing the DVDs free all over the world. At a pinch we will (as before) put straight copies up for individuals who cannot get it any other way, and we have some copies on memory sticks for on distributors.

((WN)) Is it your opinion that the UK Government should be encouraging the adoption of projects like this as mainstream educational resources?

AC: Clearly yes. We have had a very enthusiastic reaction from schools and the teaching community. We think every school should have an intranet copy. We expect the Government to catch on in a few years. That is not to say that Wikipedia is as good as resources developed by teachers for teachers such as lesson plans etc. but it is a fantastic resource.

((WN)) You’re a Wikipedia administrator, all too often a thankless task. What prompted you to get involved in the first place? What are the most notable highs and lows of your involvement with the project?

AC: Funnily the thing I have found most amazing about Wikipedia is not widely discussed, which is the effect of Wikipedia policies on new editors. I have seen countless extreme POV new editors, who come in and try to get their opinions included slowly learn not only that there are other opinions to consider but that elements of their own opinion which are not well founded. Watching someone arrive often (on pages on religions for example) full of condemnation for others, gradually become understanding and diplomatic is one of the biggest buzzes there is. The downside though is where correcting things which are wrong is too painfully slow because you need to find sources. I was a post-doc at Cambridge University in combustion and I know the article on Bunsen burners has several really significant errors concerning the flame structure and flow structure. But sadly I cannot correct it because I am still looking around for a reliable source.

((WN)) Do you believe schools should encourage students to get involved contributing to the editable version of Wikipedia? Does SOS Children encourage those who are multilingual to work on non-English versions?

AC: I think older students have a lot to learn from becoming involved in editing Wikipedia.

((WN)) To close, is there anything you’d like to add to encourage use of Wikipedia for Schools, or to persuade educators to gain a better understanding of Wikipedia?

AC: I would encourage people to feed back to the project online or via the charity. The Wikipedia community set out to help educate the world and are broadly incredibly well motivated to help. As soon as we understand what can be done to improve things people are already on the task.

((WN)) Thank you for your time.

Sunday, February 15, 2009

The American cartoon series “The Simpsons” will today be broadcast for the first time in high definition (HD). Today’s show will also introduce a new title sequence.

Today’s episode, named “Take My Life, Please” (20×10), also makes references to HDTV in the Chalkboard gag when Bart Simpson writes “HDTV is worth every cent” on the chalkboard.

This will be the first major permanent change to the show’s introduction since its launch in 1989; previous changes have included variations in the duration of the intro, and special one-shot introductions for the Treehouse of Horror Halloween episodes. This new intro also includes some 3D animation when the camera pans over Springfield.

This episode is not quite the first time The Simpsons has appeared in HD, as The Simpsons Movie was rendered in HD.

Fox will broadcast The Simpsons in 720p and will now letterbox the show on their standard definition feed.

Monday, December 3, 2007

At Thanksgiving dinner David Shankbone told his white middle class family that he was to interview Reverend Al Sharpton that Saturday. The announcement caused an impassioned discussion about the civil rights leader’s work, the problems facing the black community and whether Sharpton helps or hurts his cause. Opinion was divided. “He’s an opportunist.” “He only stirs things up.” “Why do I always see his face when there’s a problem?”

Shankbone went to the National Action Network’s headquarters in Harlem with this Thanksgiving discussion to inform the conversation. Below is his interview with Al Sharpton on everything from Tawana Brawley, his purported feud with Barack Obama, criticism by influential African Americans such as Clarence Page, his experience running for President, to how he never expected he would see fifty (he is now 53). “People would say to me, ‘Now that I hear you, even if I disagree with you I don’t think you’re as bad as I thought,'” said Sharpton. “I would say, ‘Let me ask you a question: what was “bad as you thought”?’ And they couldn’t say. They don’t know why they think you’re bad, they just know you’re supposed to be bad because the right wing tells them you’re bad.”

Friday, May 28, 2010

A man accused of being a serial killer has appeared in Bradford magistrates court in West Yorkshire today charged with three counts of murder. 40-year-old Stephen Griffiths is accused of killing Suzanne Blamires, 36, Susan Rushworth, 43, and Shelley Armitage, 31, all prostitutes.

Griffiths, a former van driver with a degree in psychology and studying for a PhD in criminology, gave his name as “Crossbow Cannibal” when asked. He has been in police custody since Monday when police were alerted to a CCTV recording that appeared to show a murder.

A caretaker had been reviewing footage from the flats where Griffiths lives when he saw footage of a woman and a man enter a flat early on Saturday morning. Two minutes later, she ran out and was followed by the man, who beat her to the ground and shot her in the head with a crossbow. Over the course of the weekend, the man was seen several times with bin bags and a rucksack.

On Tuesday, the day after the arrest of Griffiths, Blamires’ remains were found in the River Aire in nearby Shipley. She had been cut into several pieces and her head was located in a rucksack. Police continue to search for the other two alleged victims; Rushworth has been missing since June last year and Armitage vanished in April.

Police have searched much of Bradford’s red-light district, where Griffiths’ third-floor flat is located. Forensic investigations at the flat are expected to last around three weeks. There are plans to search landfill sites for bodies, and police may yet expand the inquiry to cover three more cold cases, although at present they have not been linked to the current inquiry.

Sniffer dogs have been used throughout the city, and police have been taking away plastic evidence bags. Some alleyways remain closed off. Police charged their suspect yesterday.

Griffiths was known as “the lizard man” in his block of flats owing to his habit of walking his two pet monitor lizards in the area. One neighbour is reported to have quoted him as saying he was studying for “a PhD in murder and Jack the Ripper,” and he has spent time in a high-security psychiatric hospital. During his five-minute court appearance he did not enter a plea, kept his head bowed and fidgeted with his cuffed hands. He said “Here, I guess,” when asked for his address.

As he stood in the glass-fronted dock, guarded by three security officers, he was watched by the families of Rushworth and Armitage, who were accompanied by police family liaison officers. Blamires’ family chose not to be present, but the victim’s mother Nicky Blamires, 54, has told the press that Suzanne was a “much-loved” family member even though she “went down the wrong path and did not have the life she was meant to have.” “Nobody deserves this,” she said. “All these girls were human beings and people’s daughters.”

Griffiths’ morning court appearance was followed by a second one this afternoon, at Bradford Crown Court. This time, he confirmed his name without incident. He was remanded into custody until next month, when he will appear in court again.

British media has been quick to compare the case to Peter Sutcliffe, dubbed the “Yorkshire Ripper”. Sutcliffe was a Bradford killer responsible for thirteen murders and seven attempted murders, including several prostitutes. Since his 1981 conviction he has spent most of the last three decades in Broadmoor high-security psychiatric hospital near London.

Monday, October 1, 2007

Charles de Kerckhove is running as an independent in the Ontario provincial election, in the riding of St. Paul’s. Wikinews’ Nick Moreau interviewed him regarding his values, his experience, and his campaign.

Stay tuned for further interviews; every candidate from every party is eligible, and will be contacted. Expect interviews from Liberals, Progressive Conservatives, New Democratic Party members, Ontario Greens, as well as members from the Family Coalition, Freedom, Communist, Libertarian, and Confederation of Regions parties, as well as independents.