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Saturday, February 12, 2011

In the final quarter of 2010, airline Air Canada (TSX:AC.B) earnings rose to 134 million CAD, 42 cents per share, capping a sharp return to profitability in 2010.

The year resulted in the company’s highest-ever earnings before interest, taxes, depreciation, amortisation, and rent (EBITDAR) of $1.39 billion, 707 million more than the previous year. Operating income for fourth quarter was reported as $85 million, which compared very favourably with an $83 million loss in 2009.

Only 21 months ago Air Canada was threatened with bankruptcy and using its financial weakness in negotiations with its employees, achieving status quo contracts. With labour contracts scheduled to end this month and next, the strong position of the airlines is expected to stiffen union resolve to share in the increased net revenues.

Those revenues were helped by increasing numbers of passengers and reducing costs, as well as foreign exchange gains. International travel, especially to the Pacific region, led the rises. US travellers through the main Toronto hub more than doubled, indicating the increase in foreign air traffic to and through Canadian airports.

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).

See the discussion page for instructions on adding schools to this list.Tuesday, September 13, 2005

NAICU has created a list of colleges and universities accepting and/or offering assistance to displace faculty members. [1]Wednesday, September 7, 2005

This list is taken from Colleges offering admission to displaced New Orleans students, and is intended to make searching easier for faculty, graduate, and professional students.

In addition to the list below, the Association of American Law Schools has compiled a list of law schools offering assistance to displaced students. [2] As conditions vary by college, interested parties should contact the Office of Admissions at the school in question for specific requirements and up-to-date details.

The Association of American Medical Colleges is coordinating alternatives for medical students and residents displaced by Hurricane Katrina. [3]

ResCross.net is acting as a central interactive hub for establishing research support in times of emergency. With so many scientists affected by Hurricane Katrina, ResCross is currently focused on providing information to identify sources of emergency support as quickly as possible. [4]

With so many scientists affected by Hurricane Katrina, ResCross is currently focused on providing information to identify sources of emergency support as quickly as possible.

Physics undergraduates, grad students, faculty and high school teachers can be matched up with housing and jobs at universities, schools and industry. [5] From the American Association of Physics Teachers, the Society of Physics Students, the American Institute of Physics and the American Physical Society.

If you are seeking or providing assistance, please use this site to find information on research support, available lab space/supplies, resources, guidelines and most importantly to communicate with fellow researchers.

The following is a partial list, sorted by location.

Alabama |Alaska |Arizona |Arkansas |California |Colorado |Connecticut |Delaware |District of Columbia |Florida |Georgia |Hawaii |Idaho |Illinois |Indiana |Iowa |Kansas |Kentucky |Louisiana |Maine |Maryland |Massachusetts |Michigan |Minnesota |Mississippi |Missouri |Montana |Nebraska |Nevada |New Hampshire |New Jersey |New Mexico |New York |North Carolina |North Dakota |Ohio |Oklahoma |Oregon |Pennsylvania |Rhode Island |South Carolina |South Dakota |Tennessee |Texas |Utah |Vermont |Virginia |Washington |West Virginia |Wisconsin |Wyoming |Canada

Monday, November 2, 2020

The following is the sixth and final edition of a monthly series chronicling the 2020 United States presidential election. It features original material compiled throughout the previous month after an overview of the month’s biggest stories.

This month’s spotlight on the campaign trail: the Free and Equal Elections Foundation holds two presidential debates, three candidates who did not participate in those debates give their final pleas to voters, and three political pundits give their predictions on the outcome of the election.

Sunday, March 4, 2007

A Spanish hospital reported today that three premature babies have died within one week from the same infection. The babies, who were being cared for in the neonatal intensive care unit of Madrid‘s 12 de Octubre Hospital, all died after being infected with Klebsiella pneumoniae bacterium. Authorities also suspect that a fourth baby has become infected with the bacterium. The Spanish patients’ association ADEPA has asked the public prosecutor of the Madrid Region, Manuel Moix, to open an investigation into the matter.

This morning, hospital authorities stated that the first death occurred on 26 February. A baby born eight weeks prematurely and weighing just under one kilo died due to septic shock arising from the infection, which was unconnected with the symptoms of his premature birth, according to hospital reports.

Shortly afterwards, two babies in the same unit died on 2 March. They appear to have died from the same infection; however the hospital stated that they are still waiting for confirmation of the cause of death. A fourth baby has been found to have the bacteria on his skin, but as yet there is no confirmation of whether he has been infected. The hospital states that although the baby is in a serious condition, this is to be expected when a baby is born so premature, and that his condition is also due to other factors, unrelated to the bacterium, which have arisen since his birth.

The hospital authorities have asserted that all of the babies in its care are under close supervision, and are being periodically monitored by the Preventive Medicine Centre, in order that the most up-to-date information may be had on the state of any and all patients in the hospital.

To prevent further infections, the hospital has taken several measures. The first is of course rigorous medical hygiene. High-risk patients are referred to other hospitals. The hospital has been divided into two separate zones, one for those already infected and the other for those who have not yet been affected. As a consequence, 25 children who were staying in the hospital while the 3 premature babies died, remain separate from the others, to make sure newly admitted children are not exposed. The nursing staff has also been restricted to one or other of these two areas. Visits from specialists of other hospital services, and from families, has been restricted. Furthermore, an epidemiological study is being undertaken to determine the origin of the situation.

The newspaper El País reports that the bacterium Klebsiella pneumoniae is to be found in hospitals as a matter of course and is often contracted by those who have been in hospital for prolonged periods (termed a nosocomial infection). The mortality rate from the bacterium is extremely high in those cases where it’s contracted by people with serious illnesses, as is often to be expected in the case of a premature birth, which can result in newborn babies weighing less than 500 grammes.

According to the Spanish daily, this type of bacterium is prevalent in hospitals throughout the world, but the incidence of infection in Madrid hospitals is lower than the Spanish average. The head of the Neonatal Unit at 12 de Octubre Hospital, Carmen Payás, explained that the bacterium is very adaptable “and keeps on learning”. The father of the dead baby, an Ecuadorian named Angel Marcelo, was quoted as saying that the progress of the baby had at first been “tremendous”, and that he had even been taken off the respirator, but that a few days later he began to cough up blood, dying soon afterwards.

The chair of ADEPA, Carmen Flores, has appealed to the Madrid public prosecutor to open an investigation into the situation and to find those responsible. ADEPA have suggested that the investigation centre on the number of casualties among infants in the hospital, and on the question of whether conditions in the neonatal unit were a direct contributor to the incidence of the infection.

José Quero, head of the Neonatology Department of the La Paz hospital in Madrid said that, “sadly enough”, this situation was “not something exceptional,” but rather something neonatologists have to watch out for.

Wednesday, November 8, 2006

As of 10:00 p.m EST November 8, 2006, the Democratic Party is projected to have gained control of both the United States House of Representatives and the United States Senate in the 2006 United States general elections. MSNBC projects that the Democrats now control 234 seats in the House of Representatives, 16 more seats than the 218 needed to control the House of Representatives as all 435 seats were up for election. In the Senate, where the balance of power is closer, one-third of all seats were up for grab. As of 10:00 p.m. EST, AP and Reuters were projecting that the Democrats had picked up all six seats they needed to retake the Senate, including the seats of incumbents Rick Santorum (Penn.), Lincoln Chafee (R.I.), Jim Talent (Missouri), Mike DeWine (Ohio), John Tester (Montana), and Jim Webb (VA). The Tester victory by less than 3,000 votes was projected at approximately 2 p.m. EST after the State of Montana announced the results of overnight recounts. Democrat Jim Webb has prevailed in that race by slightly more than 7,000 votes, though his opponent has not conceded and a recount may still occur.

Sunday, February 14, 2010

Chicago’s Metra is currently considering the possibility of selling the naming rights to its train stations, rail lines, and even bridges to generate more revenue. 

The regional rail system for Chicago and its surrounding suburbs has been experiencing revenue shortfalls, along with other public transportation agencies such as the Chicago Transit Authority and Pace. They all rely on sales taxes and fares to fund their services, but the recent recession has reduced sales tax revenues, and unemployment has caused ridership to fall. Compared to 86.8 million trips in 2008, Metra reported that only 82.3 million trips were provided in 2009. As spokeswoman Judy Pardonnet said, “We’re looking at any opportunity to increase non-fare revenue.”

A law approved by former Illinois governor Rod Blagojevich in 2008 granted free rides to all seniors regardless of income, adding to the decreasing fare revenues as well. State lawmakers are trying to restrict the free rides to low-income seniors; Metra has not yet commented on the issue, however. 

New designs put on the agency’s website last September has attracted more traffic, and Metra is considering selling advertising space online. In addition, advertising space could be sold on the outside of train cars as well. As for the naming rights to stations and routes, Metra plans to hire a consultant that would figure out the details of such a proposal. Spokesperson Meg Reihle did not know how much money Metra could gain from the sale or which organizations would be interested in buying. 

According to Ms. Reihle, public transit agencies in other cities have sold naming rights as well, such as the Greater Cleveland Regional Transit Authority in Cleveland and Long Island Rail Road in Long Island. TECO Energy sponsors a rail line in Tampa’s Hillsborough Area Regional Transit for US$1 million over ten years. 

Throughout its 26-year history, Metra has named several of its locomotives and renamed two stations: Ogilvie Transportation Center, which was previously named North Western Station, and Millennium Terminal, which was previously called Randolph Street. No transactions were made in renaming those two stations, however. There is also a Station named after the candy maker Mars, but that station was named before Metra took it over, and the company doesn’t pay Metra for any naming rights. 

Execuive Director Phil Pagano sees the proposal as a way for businesses to advertise themselves. “I think the business community recognizes that transit is positive for their advertising benefit,” said Mr. Pagano at a board meeting. In addition to businesses, hospitals located near the train stations could purchase naming rights as well. However, Mr. Pagano has also stated that “the agency would be selective about the type of businesses it partners with.”

Metra has said that it will be sensitive to the wishes of the communities near the stops, and town names will not be removed from station names. Rather, both the municipality and the sponsoring organization would share the naming rights, such as in renaming Naperville Station to “Naperville Boeing Station”. “I’m not sure whether [the old name] is first or second, but definitely it’s going to have to be there,” said Mr. Pagano.