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Thursday, November 8, 2007

India is the latest of the countries where the One Laptop Per Child (OLPC) experiment has started. Children from the village of Khairat were given the opportunity to learn how to use the XO laptop. During the last year XO was distributed to children from Arahuay in Peru, Ban Samkha in Thailand, Cardal in Uruguay and Galadima in Nigeria. The OLPC team are, in their reports on the startup of the trials, delighted with how the laptop has improved access to information and ability to carry out educational activities. Thailand’s The Nation has praised the project, describing the children as “enthusiastic” and keen to attend school with their laptops.

Recent good news for the project sees Uruguay having ordered 100,000 of the machines which are to be given to children aged six to twelve. Should all go according to plan a further 300,000 machines will be purchased by 2009 to give one to every child in the country. As the first to order, Uruguay chose the OLPC XO laptop over its rival from Intel, the Classmate PC. In parallel with the delivery of the laptops network connectivity will be provided to schools involved in the project.

The remainder of this article is based on Carla G. Munroy’s Khairat Chronicle, which is available from the OLPC Wiki. Additional sources are listed at the end.

Saturday, April 17, 2021

On Thursday, Germany’s Federal Constitutional Court ruled a five-year rent freeze introduced earlier in February last year illegal due to lack of the Berlin Senate’s jurisdiction. This decision allowed rent to be increased as the Court ruling invalidated the previously introduced law which had capped the rent for about 90% of renters in the country. Protesters gathered in the capital city of Berlin with demonstrations against the ruling and against the possible increases in rent. Some demanded dispossessions of large real estate companies.

Protesters gathered in Berlin’s Neukölln and Kreuzberg districts, and reportedly thousands of people participated. The crowd reportedly walked from Hermannplatz towards Kottbusser Tor and then to Oranienplatz. Police closed several streets for the day. Organizers said 25 thousand people reportedly joined the protest, The Berlin Spectator reported.

Protesters marched with posters such as “You can have our hatred, You do not get our rent. (Housing is not a commodity.)” ^{((de))German language: ?unseren hass den konnt ihr haben, unsere miete bekomm ihr nicht (wohnenist keine ware)} and “The rich should pay! (Social struggles connects [us].)” ^{((de))German language: ?die reichen sollen zahlen (soziale kämpfe verbinden)}. Some protesters brought lids of boiling of frying pans and made noise. The German word for lid is same as the one for rent cap. They reportedly chanted slogan “If you take a cover from us, we’ll come back with thousands.”.

The Social Democratic Greens and Left parties’ coalition previously introduced the rent cap through the country’s Senate in February last year, citing raising rent prices in the country. Christian Democratic Union/Christian Social Union alliance and the Free Democratic party had filed the appeal leading to the present ruling.

The overturned ruling by Berlin State Government had previously fixed the rent from February 2020 to February 2025 on its June 2019 level. A senator who was in charge of urban development, Sebastian Scheel, commented about his disappointment, and said either the federal government or any of the states now had an opportunity to create laws to control the rent.

Thursday, May 25, 2006

Lawyers for students who sued to stop the use of the California High School Exit Exam today filed a request for an expedited hearing of their case in appellate court, hoping to have the test set aside in time for graduation.

“It would be tragic if students were deprived of the once in a lifetime opportunity to graduate with their classmates due to scheduling issues in this matter,” according to the text of the appeal filed in Division Four of the First Appellate District.

Today’s filing fulfills a promise made by lead attorney Arturo Gonzalez yesterday after the State Supreme Court issued a stay of an Alameda County Superior Court judge’s order that the test not be used to determine graduation. “Our clients are disappointed in today’s 4-3 split decision of the California Supreme Court. However, this fight is not over,” Gonzalez said, “We intend to seek immediate relief in the court of appeals in San Francisco. We are hopeful that oral argument can be scheduled in time to obtain an order that would allow the Class of 2006 to graduate.”

On May 12, Alameda County Superior Court Judge Robert Freedman decided that the test was unfair and unconstitutional and issued an injunction against the use of the test. The following week, attorneys for State Superintendent of Schools Jack O’Connell, author and avid supporter of the law requiring the test, appealed Freedman’s decision directly to the State Supreme Court, asking the court to stay the effect of the injunction immediately and to over rule it. Yesterday, the court issued the stay, but send the state’s appeal down to the appellate court.

“Yesterday, the Supreme Court noted that it was “not persuaded” that the injunction was the appropriate remedy,” according to the papers filed in court today. “It stayed the injunction and remanded the case to this Court with instructions to “establish a schedule for expedited briefing and argument.”

“Plaintiffs respectfully submit that, if the schedule established by this Court does not allow for a decision on the remedy issued by the trial court before the bulk of high school graduations have taken place, then that schedule cannot be considered to be expedited,” according to the filing, “There is only one issue that needs to be decided by this Court prior to the pending high school graduations — whether, assuming Plaintiffs prevail on their constitutional claims, the injunction granted by the trial court was an appropriate remedy.”

In the filing, lawyers for Liliana Valenzuela, et al., who sued in February to have the test set aside so she and the other students involved in the case could graduate, remind the appellate court that the State Supreme Court needed only a few days to reach its decision.

“With the majority of graduations occurring in early June, Plaintiffs respectfully submit that it is a reasonable interpretation of the Supreme Court’s Order to set a hearing for this matter next week,” lawyers wrote in the filing.Cynthia O’Brien, who oversees testing at James Logan High School in Union City, expressed some exasperation over the on-again, off-again situation regarding the test. “What is happening at this time with the emotional lives of students who are in limbo is not reasonable or in their best interest” she said. “Although the exam’s intention is to create a better education environment for students (my words), it is now more about politics than the students.”

However, she’s not opposed to the test itself. “I believe that the intent of minimum proficiencies is in the right direction. We do a disservice to students who are not prepared to compete in their adult world,” she told the James Logan Courier, “I do believe that the State needs to study real alternate paths that could be pursued, such as using proficiency on STAR, a senior project demonstrating both math and English proficiency or some other pathway.”

This article is based on Appeals Court Asked for Quick Decision in Exit Exam Case by Patrick Hannigan of The James Logan Courier, which has a copyright policy compatible with our CC-BY 2.5. Specifically “Creative Commons 2.5 Share-Alike license“

Tuesday, September 1, 2015

Nick Bos, of the University of Helsinki, studies “the amazing adaptations social insects have evolved in order to fight the extreme parasite pressure they experience”. In a recently-accepted Evolution paper Bos and colleagues describe ants appearing to self-medicate.

The team used Formica fusca, an ant species that can form thousand-strong colonies. This common black ant eats other insects, and also aphid honeydew. It often nests in tree stumps or under rocks and foraging workers can sometimes be spotted climbing trees.

Some ants were infected with Beauveria bassiana, a fungus. Infected ants chose food laced with toxic hydrogen peroxide, whereas healthy ants avoided it. Hydrogen peroxide reduced infected ant fatalities by 15%, and the ants varied their intake depending upon how high the peroxide concentration was.

In the wild, Formica fusca can encounter similar chemicals in aphids and dead ants. The Independent reported self-medicating ants a first among insects.

Bos obtained his doctorate from the University of Copenhagen. He began postdoctoral research at Helsinki in 2012. He also runs the AntyScience blog. The blog aims to help address “a gap between scientists and ‘the general public’.” The name is a pun referencing ants, its primary topic, science, and “non-scientific” jargon-free communication. He now discusses his work with Wikinews.

((Wikinews)) What first attracted you to researching ants?

Nick Bos Me and a studymate were keeping a lot of animals during our studies, from beetles, to butterflies and mantids, to ants. We had the ants in an observation nest, and I could just look at them for hours, watching them go about. This was in my third year of Biology study I think. After a while I needed to start thinking about an internship for my M.Sc. studies, and decided to write a couple of professors. I ended up going to the Centre for Social Evolution at the University of Copenhagen where I did a project on learning in Ants under supervision of Prof. Patrizia d’Ettorre. I liked it so much there I ended up doing a PhD and I’ve been working on social insects ever since.

((Wikinews)) What methods and equipment were used for this investigation?

NB This is a fun one. I try to work on a very low budget, and like to build most of the experimental setups myself (we actually have equipment in the lab nicknamed the ‘Nickinator’, ‘i-Nick’ and the ‘Nicktendo64’). There’s not that much money in fundamental science at the moment, so I try to cut the costs wherever possible. We collected wild colonies of Formica fusca by searching through old tree-trunks in old logging sites in southern Finland. We then housed the ants in nests I made using Y-tong [aerated concrete]. It’s very soft stone that you can easily carve. We carved out little squares for the ants to live in (covered with old CD covers to prevent them escaping!). We then drilled a tunnel to a pot (the foraging arena), where the ants got the choice between the food with medicine and the food without.

We infected the ants by preparing a solution of the fungus Beauveria bassiana. Afterwards, each ant was dipped in the solution for a couple of seconds, dried on a cloth and put in the nest. After exposing the ants to the fungus, we took pictures of each foraging arena three times per day, and counted how many ants were present on each food-source.

This gave us the data that ants choose more medicine after they have been infected.

The result that healthy ants die sooner when ingesting ROS [Reactive Oxygen Species, the group of chemicals that includes hydrogen peroxide] but infected ants die less was obtained in another way (as you have to ‘force feed’ the ROS, as healthy ants, when given the choice, ignore that food-source.)

For this we basically put colonies on a diet of either food with medicine or without for a while. And afterwards either infected them or not. Then for about two weeks we count every day how many ants died. This gives us the data to do a so-called survival analysis.

We measured the ROS-concentration in the bodies of ants after they ingested the food with the medicine using a spectrophotometer. By adding certain chemicals, the ROS can be measured using the emission of light of a certain wave-length.

The detrimental effect of ROS on spores was easy to measure. We mixed different concentrations of ROS with the spores, plated them out on petridishes with an agar-solution where fungus can grow on. A day after, we counted how many spores were still alive.

((Wikinews)) How reliable do you consider your results to be?

NB The results we got are very reliable. We had a lot of colonies containing a lot of ants, and wherever possible we conducted the experiment blind. This means the experimenter doesn’t know which ants belong to which treatment, so it’s impossible to influence the results with ‘observer bias’. However, of course this is proof in just one species. It is hard to extrapolate to other ants, as different species lead very different lives.

((Wikinews)) Where did the ants and fungus you used come from? How common are they in the wild?

NB For ants, see above about the collection.

This species of fungus does appear in Finland, but we chose to use a different strain from Denmark (with thanks to Prof. J. Eilenberg and the laboratory technician Louise Lee Munch Larsen from the University of Copenhagen). Animals can adapt to local strains (‘local adaptation’), and just to make sure we thought it would be good to use a strain of fungus that the ants definitely did not evolve specific resistances against. This means that the reaction of the ants (to self-medicate) is very likely to be a general response, and not just against their local fungal enemies.

((Wikinews)) Are there any ethical considerations around exposing ants to toxins and parasites?

NB Legally, no. Insects do not have any ‘rights’ as such regarding ethics. That said, we do take measures to not make them ‘suffer unnecessarily’. For example, dissections are done when the ants are anesthetized (either by CO2 or Ice), and when ants need to be killed, we do it in alcohol, which kills the ants in a matter of seconds. So while the ants do not have ‘rights’ as such, we still try to handle them with as much respect as possible (even though the experiment involves infecting them with a deadly fungus).

But even though the 12,000 ants in our study sounds like a lot (and it is), this is negligible in the ‘grand scheme of things’. It has been calculated that in the Netherlands alone, nearly a trillion insects die against just the licence-plates of cars every six months. I don’t own a car, so that means I’m excused right? 😉

((Wikinews)) This is the first evidence for self-medicating insects. How widespread do you think this phenomenon could be in reality?

NB It’s not actually the first evidence for self-medication in insects. Moths and fruit flies definitely do it, and there’s evidence in honey bees and bumble-bees as well. So it seems to be quite wide-spread in the insect world. I have no doubt that as time goes on, there will be more and more cases documented. Insects (and animals in general) seem to be quite good at taking care of themselves.

((Wikinews)) How might ants locate healing substances in the wild?

NB Very good question. This is something that’s important to know. If they would only do it in the lab, the behaviour wouldn’t be very interesting. We have some guesses where they might get it from, but at the moment we don’t know yet. That said, I plan to investigate this question (among others) further [in] the next couple of years.

((Wikinews)) For your PhD you researched ants’ scent-based communications. Could healthy ants perhaps tell other ants are infected and encourage this behaviour?

NB There’s not much known about this. There’s conflicting evidence about whether sick ants actually smell different from healthy ones or not. At the moment it seems that sick ants mostly take care of the problem themselves. Sick ants stop most interaction with nestmates and especially brood, and leave the nest to die in isolation. This is probably for reducing chance of infecting nestmates, but of course it also reduces the work load of their nest-mates, as their corpse doesn’t have to be dragged out etc.

So as an answer to the question, I would find it unlikely that such a behaviour would evolve, but it’s not known yet.

((Wikinews)) Ants generally avoided the peroxide if they were healthy, but in some circumstances might they try to build resistance against infection in advance?

NB Who knows? Also not known yet unfortunately. That said, there is a very interesting study about resin collection in ants. Wood ants collect tree-resin, which has anti-microbial properties. They collect this even if not infected, and when you infect them, they don’t collect more of the resin than normal. So basically it seems like they collect it in order to keep diseases out of the nest, so they stop the disease before it can actually infect them.

((Wikinews)) Are there plans to follow this research up? Might you research other species? Other substances?

NB I first want to find out where they get it from in nature. There might be many sources of medicine (recent evidence suggests that tobacco plays a similar role for bumble bees). Dalial Freitak, who is also on this paper is currently running tests with Ph.D. student Siiri Fuchs (who is also on the paper) with other substances to see if any have the same effect as H2O2 [hydrogen peroxide].

Once the behaviour has been well described in this species of ant, I might do a comparison with other species. For example, once we find the source of the medicine in nature… would species without access to this source also have evolved the same behaviour in the lab? And if so… where would they get it from?

Also… can ants medicate their friends? 🙂

((Wikinews)) What other research are you working on right now?

NB Phew…lots! 🙂

I still have some questions left unanswered from my Ph.D. work related to how ants recognize who is a friend and who isn’t. I also started collaborating with Prof. Michael Poulsen from the University of Copenhagen on immunity in fungus-growing termites, as well as their chemical recognition abilities. Furthermore we’re working on social parasitism in wood-ants (ants have lots of animals exploiting the nest for shelter and resources, which all somehow have to get in to the fortress without getting killed).

A compilation of brief news reports for Thursday, November 13, 2008.

A new study has found that people storing extra fat around their waist have a strongly increased chance of early death, even if their overall weight is average. The study, published in the New England Journal of Medicine today, found that for each addition 5 cm on the waist, the chance of early death is increased by between 13% and 17%.

In the study, 360,000 people from across nine countries in Europe were surveyed.

One of the study’s authors, Professor Elio Riboli of Imperial College London, commented on the findings. “We were surprised to see the waist size having such a powerful effect on people’s health and premature death,” he stated.

Sources

• “‘Love handles’ raise death risk” — BBC News Online, November 13, 2008
• Ian Sample. “Waist, not just weight, shows risk of premature death, study says” — The Guardian, November 13, 2008
• Tobias Pischon et al. “Abstract: General and Abdominal Adiposity and Risk of Death in Europe” — New England Journal of Medicine, November 13, 2008

The European Commission, the executive branch of the European Union, has today lifted its ban on unusually shaped fruits and vegetables, in what the EU’s agriculture commissioner has called “a new dawn for the curvy cucumber and the knobbly carrot”.

The regulation has previously been criticized as an example of the EU’s bureaucracy by critics of the organisation.

The products affected by the deregulation are apricots, artichokes, asparagus, aubergines, avocadoes, beans, Brussels sprouts, carrots, cauliflowers, cherries, courgettes, cucumbers, cultivated mushrooms, garlic, hazelnuts in shell, headed cabbage, leeks, melons, onions, peas, plums, ribbed celery, spinach, walnuts in shell, water melons and witloof/chicory.

Sources

• “EU slices up ‘ugly fruit’ rules” — BBC News Online, November 13, 2008
• “Europe Relaxes Rules on Sale of Ugly Fruits and Vegetables” — New York Times, November 13, 2008

A vase purchased at a car boot sale for £1 has sold for £32,450, following advice from experts on the BBC‘s Antiques Roadshow television program. The vase was sold in an auction at Christie’s.

The vase was found to be a 1929 work made by the French designer Rene Lalique.

Sources

• “Car boot sale vase nets £32,450” — BBC News Online, November 13, 2008
• “£32,449 profit for car boot sale vase by Lalique” — Times Online, November 13, 2008

Recent anonymous press briefings by US State Department officials indicated that its arms control division may punish Blackwater Worldwide for improper paperwork.

The Directorate of Defense Trade Controls has the power to fine or agree voluntary penalties with exporters of certain weapons, who do not follow correct procedures. Blackwater Worldwide, a private military company, exported automatic weapons to Iraq that became the subject of a federal investigation first disclosed in 2007.Concern was expressed by the unnamed officials that paperwork errors may make the weapons untraceable, and that some reached Iraq’s black market.

Sources

• “Blackwater Faces Millions in Fines for Weapons Shipments (radio show transcript)” — Democracy Now!, November 13, 2008
• Knight Ridder / McClatchy Newspapers. “Blackwater faces Fines over Arms Deal” — Military.com, November 13, 2008
• Dan Friedman, Congress Daily. “Blackwater could face sanctions for improper arms shipments” — Government Executive, November 7, 2008

A compilation of brief news reports for Monday, May 7, 2007.

A 30 meter section of a gas pipeline in Luka (near Kiev) in Ukraine has been destroyed by an explosion. Although supplies to Europe via this pipeline have stopped, Ukrainian Energy Minister Georgi E. Boyko said that supplies to Europe would not be affected.

“There are no changes in volumes of gas being transported,” Yuri Korolchuk said. “Volumes due to pass through the damaged section are being redirected through the Soyuz pipeline.”

Normal flows are reported in the Czech Republic, Hungary, Poland and Romania.

Sources

• “Blast damages pipeline in Ukraine” — Russia Today, May 8, 2007
• Natalya Zinets, Reuters. “Blast hits Ukraine gas pipeline” — The Scotsman, May 7, 2007

Copper prices are rising. Between record copper imports from China, and a mining strike in Peru, the prices have climbed to over $8100 (United States dollars) a tonne, for a gain of $575 dollars over the last week. However the upward trend is not new, it has been climbing for quite some time. In April 2003, the price of copper was under $2000 a tonne.

The metal market has been tending up due to growth in the Chinese industrial production. This trickles down to the local level, where the buying price at scrap yards is ever climbing, making scrap metal collection a more profitable endeavour for individual people using pick up trucks or other such vehicles to collect and cash in the scrap metal at metal buying yards. It can be collected via agreements with businesses, from the garbage, or, sometimes, by theft.

Copper prices fell today on the NYMEX commodity exchange from US$3.7545 per pound to US$3.7125 based on the July futures contract.

Sources

• “Copper up but crude oil down” — Financial Express, May 6, 2007
• Millie Munshi. “Metals Bubble Poised to Burst on Increasing Supplies” — Bloomberg L.P., May 7, 2007
• “Commodity Futures” — Bloomberg L.P., accessed May 7, 2007

One man was killed and another injured by an exploding backpack in the parking lot of the Luxor Hotel in Las Vegas, Nevada. The explosion happened at 4 a.m. PDT when the victim tried to remove a the object left on top of his car.

Agents from the Bureau of Alcohol, Tobacco, Firearms and Explosives (ATF) are on the scene. Aerial images did not show any apparent damage.

“We believe the victim was the intended target of this,” Bill Cassell said, spokesperson for the Las Vegas Metropolitan Police Department. “This is being treated as a homicide in which the weapon used to cause death is a non-traditional weapon.”

Both of the victims worked at the Luxor.

Sources

• Associated Press. “1 dead, 1 hurt in Las Vegas parking lot blast” — MSNBC, May 7, 2007
• “Explosion kills man in Vegas outside Luxor hotel” — Reuters, May 7, 2007

Saturday, August 25, 2007

The leading supplier of school uniforms in the United Kingdom, Lancashire-based manufacturer Trutex, has announced it is “seriously considering” including GPS tracking devices in future ranges of its uniform products after conducting an online survey of both parents and children.

“As a direct result of the survey, we are now seriously considering incorporating a [tracking] device into future ranges” said Trutex marketing director Clare Rix.

The survey questioned 809 parents and 444 children aged nine to 16. It showed that 44% of parents were worried about the safety of pre-teen children, and 59% wanted tracking devices installed in school apparel. 39% of children aged nine to 12 were prepared to wear clothing with tracking devices in them, while teenagers were notably less enthusiastic and more wary of what Trutex has admitted they see as a “big brother” concept.

However, Trutex has claimed the tracking devices would bring about worthwhile benefits, including being a valuable resource for parents who wanted to keep a close eye on where their children were at all times.

“As well as being a safety net for parents, there could be real benefits for schools who could keep a closer track on the whereabouts of their pupils, potentially reducing truancy levels” says Rix.

Each year, Trutex supplies 1 million blouses, 1.1 million shirts, 250,000 pairs of trousers, 20,000 blazers, 60,000 skirts and 110,000 pieces of knitwear to the UK.

It is not the first company to manufacture school uniforms with a central focus on child safety; last week Essex firm BladeRunner revealed it was selling stab-proof school blazers to parents concerned about violence against their children. The blazers were outfitted with Kevlar, a synthetic fibre used in body armour. It has already received orders internationally, including Australia.

If the Trutex tracking devices go ahead, it is unclear where in the uniform they will be located.