Thursday, February 10, 2011

Calgary city council voted 10 to 3 on Wednesday to stop fluoridating their water supply. This overturns a previous plebiscite from 1989 to add the fluoride in an attempt to reduce tooth decay.

Opponents of water fluoridation claim that there could be unknown health effects of fluoride, and question its effectiveness in preventing tooth decay. They also claim that individuals should be able to decide for themselves whether or not to use fluoride. However, Alberta Health Services maintains that current evidence shows that fluoride is both safe, and beneficial to dental health.

It is estimated that no longer fluoridating the water supply could save Calgary’s city council C$750 thousand (€550 thousand) annually, as well as cutting a C$6 million (€4.3 million) upgrade to the fluoridation system.

Saturday, February 17, 2007

A Delta II rocket blasted off from NASA’s Cape Canaveral launch pad today, carrying five satellites designed to investigate the northern lights and the electromagnetic storms that cause them. The launch had been twice delayed due to bad weather, but was eventually performed at 23:00 UTC.

NASA and the Canadian Space Agency have collectively invested $200 million in the mission, known as the THEMIS Project. Through this mission, they hope to develop better techniques to forecast electromagnetic storms, in order to protect communication satellites, power grids, and spacewalking astronauts. Scientists from the University of Alberta and the University of Calgary also helped with the project.

The Sun continuously sends a stream of charged particles, called the solar wind, at the Earth. We are generally protected from the solar wind by the Earth’s magnetosphere. During substorms, however, the magnetosphere gets overloaded by the solar wind and the magnetic field lines stretch until they eventually snap back, energizing and flinging electrically charged particles towards Earth.

Scientists want to find out what snaps in the overloaded magnetosphere to trigger a substorm.

Thursday, January 4, 2018

A fire on Sunday night in the seven-storey carpark for the Echo Arena in Liverpool, England destroyed almost all the vehicles parked inside and led to cancellation of the final evening of the Liverpool International Horse Show and evacuation of nearby blocks of flats. The blaze reportedly started with a parked Range Rover Discovery.

Investigators with the fire brigade stated that they believe the fire began with an accidental engine fire in the Range Rover at about 4.30 pm. The first call was made at 4.42 and firefighters arrived eight minutes after that. Ultimately twelve engines and 85 firefighters were involved in combatting the blaze. Aerial appliances were used and also three high-volume pumps. Fed by the fuel in vehicles parked inside, the temperature of the fire in the carpark is believed to have reached as high as 1,000°C. It was too hot to be extinguished with water from hydrants, so a high-volume pump was used to draw water from the River Mersey, and two more were brought from other fire brigades in the region.

The carpark has seven storeys and a capacity of 1,600 vehicles, and approximately 1,300 were parked in it when the fire broke out. According to Dan Stephens, chief fire officer for Merseyside Fire and Rescue Service, almost all of them were destroyed, with the exception of a few parked on the top level and at corners. “With these very high temperatures, you were never going to put the fire out without the whole building taking hold. The speed at which the fire spreads means you simply aren’t going to put it out,” said Stephens.

The carpark itself was severely damaged; according to Joe Anderson, the mayor of Liverpool. It is not in danger of collapsing but will have to be demolished, which will be difficult with the many burned-out cars still inside it, Anderson told the BBC.

According to Stephens, there were no serious injuries: one woman injured her hand, and two people were treated for smoke inhalation. A spokesman for the Echo Arena also stated that all animals were safe. All horses were successfully evacuated from the carpark and then removed from the stables after smoke spread to them. Six dogs were also rescued unharmed, two on a lower level in the early stages of the fire and four that had been left in a car on the top level, freed by firefighters on Monday after the fire was put out.

The final evening of the four-day Liverpool International Horse Show had been scheduled to begin at 7.30, and had to be cancelled. Many attendees were stranded in the city on New Year’s Eve night. Merseyside police directed people to the Pullman Hotel, where Red Cross assistance was available, and the Liverpool City Council set up an assistance centre at the Lifestyles Gym. A spokesman for the Association of British Insurers has said that insurance companies will “move very quickly” to reimburse owners whose vehicles were destroyed.

Nearby blocks of flats were evacuated because of the smoke. Eyewitnesses reported hearing what they at first thought were firecrackers, then “multiple explosions”, “bangs and popping”, “the bangs of car windows exploding”. People reported leaving everything in their cars, including their cellphones, and running for their lives.

Mayor Anderson tweeted that cuts to fire services over the last two years made it significantly harder to fight the fire and might have caused it not to be controllable. He also suggested that fire safety in multi-storey carparks had not been sufficiently considered and that installing sprinklers in them might help stop future fires before they become unmanageable, in a letter to Nick Hurd, a member of Parliament.

Monday, February 12, 2007

Cars drove home the big prize last night, from the 34th Annual Annie Awards. The animation industry’s highest honor, ASIFA-Hollywood’s Annies recognise contributions to animation, writing, directing, storyboarding, voice acting, composing, and much more.

As mentioned, Pixar took home the big prize last night, after facing stiff competition from four other Happy Feet, Monster House, Open Season, and Over the Hedge.

But the biggest winner of the night didn’t get a “Best Animated Feature” nod at all. Flushed Away won five feature animation categories including Animated Effects (Scott Cegielski), Character Animation (Gabe Hordos), Production Design (Pierre-Olivier Vincent), Voice Acting (Sir Ian McKellan as Toad), Writing (Dick Clement, Ian La Frenais, Chris Lloyd, Joe Keenan, and Will Davies).

Over The Hedge won awards for Directing (Tim Johnson and Karey Kirkpatrick), Storyboarding (Gary Graham), and Character Design (Nicolas Marlet).

Of little surprise, Randy Newman won an Annie for Cars in the “Music in an Animated Feature Production” category. Newman has won many Oscars for his movie music, and has a nomination this year for the song “Our Town”. Newman didn’t attend the Annies, instead picking up a Grammy for “Best Song Written For Motion Picture, Television Or Other Visual Media”.

DisneyToon Studios’ Bambi II won “Best Home Entertainment Production”, while “Best Animated Short Subject” went to Blue Sky Studios’ No Time For Nuts, which is based on Ice Age.

“Best Animated Video Game” went to Flushed Away The Game, while a United Airlines ad named “Dragon” won a “Best Animated Television Commercial” Annie for DUCK Studios.

Thursday, January 4, 2018

A fire on Sunday night in the seven-storey carpark for the Echo Arena in Liverpool, England destroyed almost all the vehicles parked inside and led to cancellation of the final evening of the Liverpool International Horse Show and evacuation of nearby blocks of flats. The blaze reportedly started with a parked Range Rover Discovery.

Investigators with the fire brigade stated that they believe the fire began with an accidental engine fire in the Range Rover at about 4.30 pm. The first call was made at 4.42 and firefighters arrived eight minutes after that. Ultimately twelve engines and 85 firefighters were involved in combatting the blaze. Aerial appliances were used and also three high-volume pumps. Fed by the fuel in vehicles parked inside, the temperature of the fire in the carpark is believed to have reached as high as 1,000°C. It was too hot to be extinguished with water from hydrants, so a high-volume pump was used to draw water from the River Mersey, and two more were brought from other fire brigades in the region.

The carpark has seven storeys and a capacity of 1,600 vehicles, and approximately 1,300 were parked in it when the fire broke out. According to Dan Stephens, chief fire officer for Merseyside Fire and Rescue Service, almost all of them were destroyed, with the exception of a few parked on the top level and at corners. “With these very high temperatures, you were never going to put the fire out without the whole building taking hold. The speed at which the fire spreads means you simply aren’t going to put it out,” said Stephens.

The carpark itself was severely damaged; according to Joe Anderson, the mayor of Liverpool. It is not in danger of collapsing but will have to be demolished, which will be difficult with the many burned-out cars still inside it, Anderson told the BBC.

According to Stephens, there were no serious injuries: one woman injured her hand, and two people were treated for smoke inhalation. A spokesman for the Echo Arena also stated that all animals were safe. All horses were successfully evacuated from the carpark and then removed from the stables after smoke spread to them. Six dogs were also rescued unharmed, two on a lower level in the early stages of the fire and four that had been left in a car on the top level, freed by firefighters on Monday after the fire was put out.

The final evening of the four-day Liverpool International Horse Show had been scheduled to begin at 7.30, and had to be cancelled. Many attendees were stranded in the city on New Year’s Eve night. Merseyside police directed people to the Pullman Hotel, where Red Cross assistance was available, and the Liverpool City Council set up an assistance centre at the Lifestyles Gym. A spokesman for the Association of British Insurers has said that insurance companies will “move very quickly” to reimburse owners whose vehicles were destroyed.

Nearby blocks of flats were evacuated because of the smoke. Eyewitnesses reported hearing what they at first thought were firecrackers, then “multiple explosions”, “bangs and popping”, “the bangs of car windows exploding”. People reported leaving everything in their cars, including their cellphones, and running for their lives.

Mayor Anderson tweeted that cuts to fire services over the last two years made it significantly harder to fight the fire and might have caused it not to be controllable. He also suggested that fire safety in multi-storey carparks had not been sufficiently considered and that installing sprinklers in them might help stop future fires before they become unmanageable, in a letter to Nick Hurd, a member of Parliament.

Friday, March 2, 2007

Sirius CEO Mel Karmazin appeared before a newly formed Antitrust Task Force, a sub-committee of the House Judiciary Committee, on Wednesday last week in Washington, D.C. to defend the proposed U.S. merger between XM and Sirius satellite radio services.

The hearing, carried live on C-SPAN, was attended by representatives from various competing broadcast companies. The representatives challenged the merger deal, and some speakers were openly hostile to Karmazin and to satellite radio in general, while other speakers were more civil.

Several times during the debate, the discussion centered on the failed merger deal between the two satellite television networks DirecTV and Echostar. The comparison between this proposed radio merger and the failed television merger was settled to some extent with an understanding that nearly all television viewers now use either cable or satellite to view available programming. Televised programming content is now delivered mainly in the form of a subscription, rather than airwave transmissions.

Unlike television programming, most radio listeners use over the air receivers to listen to free programming content supported advertisers.

“We come to this hearing with an open mind, but we recognize that the companies have the obligation to convince the Congress, the regulators, and most importantly, the American People that this combination will improve the competitive playing field and benefit consumers,” said John Conyers, the sub-committee chairman. To determine the legality of this merger, Congress first needs to decide whether a combined XM and Sirius would be a monopoly, as the only satellite radio provider in the United States, or whether the new company will actually be in competition with other forms of radio-like entertainment, according to Conyers. The hearing focused on alternatives such as Internet radio, terrestrial radio, portable audio devices, and emerging services, such as cell phone services and WiMax.

Monday, August 7, 2006

Dogs can be trained to detect early and late stages of lung and breast cancer accurately according to a study published by California scientists in the little-known scientific journal Integrative Cancer Therapies.

The study took place over the last five years at the Pine Street Foundation, a non-profit organization which conducts evidence-based research on integrative medicine (combining complementary and alternative medicine and mainstream medicine). Michael McCulloch and colleagues used three Labrador Retrievers and two Portuguese Water Dogs, both common pets, that received basic behavioral dog training. The researchers trained the dogs to lie down next to a sample from a cancer patient and to ignore other samples.

The samples used were breath samples from 55 patients with lung cancer and 31 with breast cancer — the two types of cancer with the highest mortality rates in the United States.

After the training phase, the dogs’ accuracy diagnosis was tested in a double-blind experiment. Among lung cancer patients, the sensitivity and specificity were 99% accurate and for breast cancer sensitivity was 88% and specificity 98%. Because these figures seem almost too good to be true, cancer experts are the same time baffled and skeptical. The authors of the study themselves also say replication of the study is needed.

Importantly, this was independent of the cancer stage, meaning the dogs were able to pick up the scent of cancer in its early stages. This is important because in many cases, the success of any treatment depends on early diagnosis. However, the researchers don’t believe this will lead to the use of dogs in the clinic soon, rather they want to find out which chemicals are actually sensed by the canines, because they could be used in laboratory assays. “It’s not like someone would start chemotherapy based on a dog test,” Dr. Gansler of the American Cancer Society said, “They’d still get a biopsy.”.

The researchers were inspired by anecdotal reports about dogs detecting cancer. In 1989, a British women consulted with her family physician because her Dalmatian kept licking a mole on her leg. At biopsy it showed to be malignant melanoma. When diagnosed too late this form of cancer has a poor survival rate, but in this case early surgery was made possible, and the women survived. Prior studies showed that breath samples from patients with lung cancer or breast cancer contain distinct biochemical markers. This provides a basis for the hypothesis that some cancer types produce volatile chemicals that dogs could smell. A study published in the British Medical Journal already proved that dogs could use their exquisite sense of smell to detect bladder cancer in urine samples, but they were only correct in 41% of cases, and another study provided preliminary evidence that dogs could detect melanomas.

This doesn’t mean you can show your breasts to your dog and it will tell you if you have cancer, other physicians caution, and scientists do not advise people to train their dogs to sniff for cancer. Unresolved issues from the study include the fact that subjects were required to breathe deeper than normal, so it’s not sure whether dogs can smell cancer in normal breath. Also, whether this is a permanent skill that would be retained by dogs was not tested.

Finally, there are concerns that could arise over liability issues: who would be responsible when the dog makes a mistake?

Current detection methods for both lung and breast cancer are not flawless. For lung cancer, chest X-ray and sputum cytology (detecting cancer cells in coughed up fluid) fail to detect many early cases, and CT scan produces many false-positive results unless combined with expensive PET scans. Although it might be comparing apples and oranges, a $2.5 million CT scanner has an accuracy of 85 to 90%. Mammography also produces false-positive results, and it may be difficult in women with dense breast tissue. As such, another type of “pet”-scan, using dogs as a biological assay, might prove feasible for screening if supported by further research. Current tests are also expensive so the use of dogs for preliminary cancer testing could prove to be an affordable alternative for countries in the developing world.

Monday, August 28, 2006

The Pentagon is considering replacing the nuclear warheads on some ballistic missiles with conventional munitions so that they can be used for “pre-emptive” strikes against alleged terrorists, Secretary of Defence Donald Rumsfeld told reporters after a meeting with Russia’s Defence Minister Sergei Ivanov.

“If either of our countries or friends and allies were threatened at some number of years into the future with a weapon of mass destruction or a capability that was that lethal, I think any president, whether of Russia or the United States, would like to have available a conventional weapon that could attack that target swiftly and accurately and precisely and not feel that the only thing they had might be a nuclear weapon, which they would not want to use.”, Rumsfeld said. He urged Russia to consider the idea too, but Ivanov said a pre-emptive strike was not the only solution.

The Pentagon has considered such strategies before. In February 2003 a similar plan was suggested, and in May 2006 it was recommended that Submarine-Launched Ballistic Missiles (SLBMs) be used for such a purpose. Critics wondered what the risks would be for setting off accidental nuclear war: it would be impossible for another nation to tell whether a Trident II or Minuteman III launch was conventional — or nuclear-armed until it had actually detonated.