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November, 2005 Archives | Homepage
Emerging Disease Problem to Worsen
Science Daily reports that Dr Andrew Cunningham has warned in the British Medical Journal that the problem of emerging diseases like SARS, Ebola and the West Nile Virus is likely to worsen.
One of the major drivers is closer human contact with wildlife, primarily caused by human encroachment into, and modification of, wildlife habitat. For example, Ebola virus outbreaks often are linked to hunting for "bushmeat" or to mining development, and the AIDS pandemic originated from human encroachment into African forests for food.
The rise in international trade and travel is also important. The emergence of West Nile virus in North America, and AIDS and SARS globally, for example, arose from such travel and trade.
This globalisation of people and products is difficult to control and is largely related to increasing air transportation. With world air travel expected to grow at about 5% a year for at least the next 20 years, the problem of emerging infectious diseases will continue to grow, he warns.
As humans continue to dig deeper into the jungles and other less traveled areas of the globe it seems likely that it is just a matter of time before we encounter another ebola or SARS type of virus. Hopefully, we will be able to stop it fairly quickly like we were with SARS -- thanks to the hard work of scientists from the WHO.
Posted on November 30, 2005
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Delta Pounds Canary Islands. Epsilon Forms.
Delta battered the Canary Islands killing seven and leaving hundreds of thousands without power according to an article in the Cape Times.
The death toll rose after strong winds blew a man off his roof, which he was apparently trying to repair on the island of Fuerteventura as the storm approached, emergency officials said.
Storm Delta also claimed the lives of six African migrants who drowned off the Canary Islands on Monday as waves swept their makeshift boat.
The islands of Tenerife and La Palma were worst hit by the storm, which had passed over by mid-morning. Uprooted trees and landslides forced the closure of roads on the picturesque islands.
About 223,000 customers had no electricity, and the lack of power was also affecting some telephone services.
Meanwhile, Tropical Storm Epsilon, the 26th storm of the record breaking season, has formed in the Atlantic. Epsilon is not forecast to hit land but could bring strong surf to Bermuda. This year's tropical season seems to never end. It will end officially on November 30th -- but Epsilon will still be around and there is no guarantee that there won't be another system in December.
Posted on November 29, 2005
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Mayan Massacre Site Discovered
The BBC reports that archaeologists have uncovered a Mayan massacre site in the Guatemalan jungle where fifty Mayans, including women and children, were murdered with spears.
These are not the victims of "random violence", says Arthur A Demarest, the US archaeologist who has spent the best part of a decade fending off drug lords and looters as he excavated the 1,200-year-old site.
He says most of the dead, who include men, women and children, have been killed by "pulling the head back and shoving a large spear through the chest into the spine".
"You find war captives decapitated but not mass executions like this," he told the BBC News website.
The hope is that with this discovery and hopefully future discoveries more can be learned about the mysterious Mayan culture and what happened to it.
Posted on November 28, 2005
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China Denies Bird Flu Cover-up
Red Orbit reports that the China's Ministry of Health is denying an accusation by a Japanese scientist that China was covering up hundreds of human bird flu deaths.
Beijing, 25 November: Commenting on a recent Internet report that alleges that "a Japanese virus expert has claimed that hundreds of Chinese people have died from avian influenza," Mao Qunan, spokesman for China's Ministry of Health, said to Xinhua during an interview that the allegation was strictly a rumour.
Mao Qunan said: "The Ministry of Health and the WHO have confirmed that none of the experts whom WHO commissioned to investigate avian influenza in Hunan was a Japanese virus expert. The report that says that this expert has claimed that hundreds of Chinese have died because of avian influenza infection is untrue."
The Japanese scientist Masato Tashiro told New Scientist that he thought China's officially reported death toll of 3 was just the tip of the iceberg.
Tashiro has now told New Scientist that the figures were examples of the "unauthorised information" circulating in China, where he was recently helping investigate the outbreak in Hunan for the WHO.
Earlier reports suggested that Tashiro believed 300 to be the true death toll from bird flu in China. "I do not know whether the numbers were based on any evidence," he says.
But the message is that "we do not know how many cases actually occurred in China", due to poor disease surveillance. "If surveillance is done more extensively, more cases may be detected." He says the international community should assist China with monitoring. He describes the situation as an "iceberg phenomenon" -- with most cases unreported.
Hopefully there are not hundreds of human bird flu deaths in China. However, China is known for hiding facts that might make the country look bad. As you may recall from the SARS outbreak China initially covered up SARS and SARS deaths which allowed SARS to spread into other countries and made SARS much more difficult to stop. And just recently China has been accused of trying to hush up the recent toxic spill into the Songhua River.
Posted on November 26, 2005
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World's Largest Indoor Aquarium Opens in Atlanta
Atlanta is now home to the world's largest indoor aquarium. The new aquarium, called the Georgia Aquarium, holds 8 million gallons of water. CNN has been covering the story live and also has an article about the new aquarium as well as an interactive tour and photo galleries.
"We've been working on this for almost two years. We have 125,000 fish here to give us an opportunity to do something that nobody in this industry has ever done before," Marcus told a press conference.
The facility hosts five viewing galleries along with a 4-D movie theater that explores the sea creatures that inhabit both fresh- and saltwater around the globe.
The aquarium expects 2.4 million visitors in the first year and to bring $1 billion into the city over the next five years. (Full story)
So where did a landlocked city get all that saltwater? It's city water chemically treated with a product that's available at most pet stores.
The aquarium is also home to some large sea creatures including beluga whales named Niko and Gasper and some whale sharks. More information will be available on the Georgia Aquariums's website once it comes back online -- they are moving servers.
Posted on November 23, 2005
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Yet Another Tropical Storm
Another tropical storm is brewing in the Atlantic Ocean. The next name on the list will be Delta if the National Hurricane Center decides to go ahead and name the storm. So far they have not even though it looks well organized enough to be a tropical storm. The image on the right shows the system. We placed an arrow on the map to make it easy to spot.
A STRONG AND LARGE NON-TROPICAL LOW PRESSURE SYSTEM OVER THE CENTRAL
ATLANTIC CENTERED ABOUT 1050 MILES SOUTHWEST OF THE AZORES
ISLANDS IS MOVING SLOWLY SOUTH-SOUTHWESTWARD. THIS SYSTEM IS
GRADUALLY ACQUIRING TROPICAL CHARACTERISTICS AND COULD BECOME A
TROPICAL STORM ON WEDNESDAY. ADDITIONAL INFORMATION ON THIS SYSTEM
CAN BE FOUND IN HIGH SEAS FORECASTS ISSUED BY THE NATIONAL WEATHER
SERVICE...UNDER AWIPS HEADER NFDHSFAT1 AND WMO HEADER FZNT01 KWBC.
The National Hurricane Center has held off on naming the storm Delta but they are likely to name this storm eventually if it continues to become more tropical. It looks organized and the winds are probably TS strength or higher.
Posted on November 22, 2005
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The Rare Almiqui
The Cuban Solenodon, also known as the Almiqui, is an insect eating rat-like creature that lives in Cuba. As the Wikipedia entry explains these unusual looking creatures were once thought to be extinct.
16-22 inches (40-55 centimeters) long from nose to tail, the Cuban Solenodon resembles a large brown rat with an extremely elongated snout and a long, naked, scaly tail. The Cuban Solenodon was mistakenly believed extinct since the last sighting in 1999 mainly because it is a nocturnal burrower, living underground. It is therefore very rarely seen. Since its discovery in 1861 by the German naturalist Wilhelm Peters, only 36 had ever been caught. The Cuban Solenodon that was found in 2003, named Alejandrito, brought the number to 37. He weighed 24 ounces and was healthy. He was released back into the wild after two days of scientific study were completed.
TimeforKids.com explains why the creature is so difficult to find -- it is nocturnal and lives underground.
It's no wonder so few have been found since then. The furry mammal is nocturnal. It stays underground during the daytime and comes up to eat worms and insects only when the sun goes down. Some scientists thought the almiqui might be extinct because none had been found since 1999.
YesButNoBuyYes has a Cuban Almiqui cartoon
Posted on November 21, 2005
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Tropical Storm Gamma Threatens Florida
Yet another tropical system has formed in the Caribbean. The new system, Tropical Storm Gamma, is a threat to South Florida according to the National Hurricane Center. Gamma currently has sustained winds of 45 mph and is expected to strengthen. The storm is expected to move North and then quickly to the Northeast. The official NHC forecast shows Gamma making a landfall in South Florida on Monday. South Florida is still recovering from a hard hit by Hurricane Wilma. Gamma is the 24th named tropical storm of this incredibly active hurricane season. The Sun-Sentinel has an article about the approaching tropical storm:
Forming in the western Caribbean on Friday, Tropical Storm Gamma was projected to aim for southwest Florida by Monday afternoon and arrive over this region by that evening possibly with winds up to 65 mph, heavy rains and a high potential for tornadoes -- exactly one month after Wilma.
The good news, at this point: Gamma was not expected to grow into a hurricane but rather remain a tropical storm. Further, a cold front could weaken the storm or guide south of the state, said Jamie Rhome, meteorologist with the National Hurricane Center in Miami Dade County.
Residents should watch it carefully, but don't panic, he said.
"While we want people to pay really close attention to this system, we don't want mass hysteria, given South Florida's sensitivity to tropical systems," he said.
Posted on November 18, 2005
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Battery Breakthrough Needed
Our ShoppingBlog.com blog has a post about the urgent need of an improved battery. But there is nothing impressive coming within the next few years. ExtremeTech has a older, but extremely detailed article on battery technology that looks at both the past and the future. The article says any major breakthrough may come from fuel cells.
Battery manufacturers know there's no new magic to be discovered that will instantly double battery capacity. The operating principles of the chemical systems that make batteries work are well understood and have been for decades. The issue for the industry is refinement. The last great development in chemistry, the lithium polymer cell, after ten years remains an unfulfilled promise because neither computer-makers nor battery-makers have yet fully exploited its potential for squeezing extra power into odd shapes.
If any breakthrough looms on the horizon, it's the battery-like power system that's not really a battery -- the fuel cell. For decades, fuel cells have percolated on the edges of awareness for engineers and scientists. They were mere curiosities that created power via chemical methods more efficiently than any other means. But they were too exotic and expensive (and big) to be considered for consumer applications. In the next few years, however, several manufacturers hope to have you toting fuel cell-power computers and cell phones that will run all day -- or several days -- without recharging or attention.
The ShoppingBlog.com article discusses batteries in development from Sony Corp. and Matsushita that will offer a 30% boost but nothing that will spare consumers. Consumers will continue to limp along constantly recharging their arsenal of gadgets.
Posted on November 17, 2005
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Green Roofs to Fight Urban Heat
SciGuy has been blogging lately here and here about using green roofs to help reduce the heat generated by massive urban areas like Houston, Texas. Houston, Texas had incredible flooding in 2001 from Hurricane Allison. The heavy rains may have been enhanced by the urban heat island affect. SciGuy points to this webpage on Inhabitants.com that explains the benefits a green roof plan could have for a city.
Providing amenity space for building users ? replacing a yard or patio
Increasing roof life span
Reducing storm water run off
Providing noise insulation
Filtering pollutants and CO2 out of the air
Providing locally grown food (with roof-top vegetable gardens)
Increasing wildlife habitat in built up areas
Reducing heating (by adding mass and thermal resistance value) and cooling (by evaporative cooling) loads on a building
Reducing the urban heat island effect
Houston is certainly not the only city that could use a project like this. Not only would it reduce the urban heat island problems but it could help filter our pollution. A similar problem is being promoted in New York called Greening Gotham. The organization says Senator Hillary Clinton has signed on as a supporter.
Posted on November 16, 2005
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Godzilla Croc
LiveScience.com reports on the discovery of new dinosaur that is being called Godzilla.
A newfound ancient sea creature looks to be part crocodile, part T. rex, and 100 percent terrifying.
The 13-foot long beast, Dakosaurus andiniensis, had a massive 18-inch-long jaw with interlocking 4-inch teeth. It is a long-lost relative of the crocodile yet it had fins.
The article quotes a researcher who says the terrifying croc was a predator of large sea creatures unlike other marine crocodiles of the time period.
"This species was very unusual, because other marine crocodiles that were around at the same time had very delicate features ? long, skinny snouts and needle-like teeth for catching small fish and mollusks," said Ohio State University researcher Diego Pol, who determined the crocodile lineage. "But this croc was just the opposite. It had a short snout, and large teeth with serrated edges. It was definitely a predator of large sea creatures."
LiveScience.com offers a photograph of the creature's skull here and a larger version of the digitized model is available here.
Posted on November 14, 2005
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New Strategy to Stop Asteroids
New Scientist reports that a new strategy developed by NASA astronaut Edward Lu to stop asteroids involves placing a massive object, likely a huge spaceship, near the incoming asteroid and use gravity to pull the object out of an orbit that will hit planet Earth.
Lu?s team finally realised that the spacecraft might not need to land at all. Placing a heavy enough object near the asteroid for long enough could produce sufficient gravitational tug to change its orbit.
For a 200-metre-wide asteroid, the spacecraft would need to weigh about 20 tonnes and lurk 50 metres from its target for about a year to change its velocity enough to knock it off course.
"This is hands down the best idea I have seen," says Erik Asphaug, a planetary scientist at the University of California at Santa Cruz. "This will work, but you need to put a large enough spacecraft out there at the right time."
The article also said that Lu thinks creating spacecraft that are large enough is perfectly feasible. Obviously you would need to have construction plans in place well ahead of the asteroid's impact date which is why discovering asteroids that might strike Earth is such an important field of astronomy.
Posted on November 12, 2005
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Planetary Society Holds Fundraising Auction
The Planetary Society is hosting a fundraising auction on eBay.
Private space museum tours, celebrity lunches, a desert field trip with
planetary scientists, autographed books and more will be offered in The
Planetary Society's on-line auction, November 2-12, 2005, on eBay. Tours
and memorabilia connected with Buzz Aldrin, Star Trek's Robert Picardo,
Bill Nye the Science Guy, Neil deGrasse Tyson, David Brin, and more. The
last hour of the auction coincides with Society's 25th anniversary dinner,
honoring James Cameron and Ray Bradbury.
Some very interesting items are being auctioned off including a Mars Science Trip in the Mojave Desert w/2 Space Scientists; autographed Star Trek Voyager DVD complete seasons 1-7 and a Celebrity Lunch w/ Bill Nye and Star Trek's Bob Picardo. The auction ends on November 12th, 2005.
Posted on November 9, 2005
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Indiana Tornado Was a Strong F3
The Associated Press reports that the killer tornado that killed over twenty people in Southern Indiana was a very large strong F3 tornado. Tornadoes of that strength are rare in November.
The deadly tornado that obliterated homes across a swath of southwestern Indiana was unusually intense and fast, packing winds that topped 200 mph as it roared through the night at up to 75 mph, meteorologists said Monday.
The storm's strength, its 41-mile path of destruction and the fact that it struck in the middle of the night in November are all unusual, said Dan McCarthy, warning coordinator at the National Oceanic and Atmospheric Administration's Storm Prediction Center in Norman, Okla.
The Tornado Project has a web page that explains the Fujita Scale. They also have a list of this year's killer tornadoes. Sunday mornings tornado was the worst so far this year. There is a risk of severe weather in the Midwest today according to the SPC convection outlook.
Update: Here is a link to the NWS Survey indicating that the tornado was an F3. A post on our BloggersBlog.com site has links to local blogosphere coverage and photos.
Posted on November 8, 2005
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Rabid Vampire Bats Kill 23 in Brazil
LiveScience.com reports that 23 people have been killed in Brazil by rabid vampire bats in the last two months.
Bites from rabid vampire bats were blamed for 23 deaths in northern Brazil over the past two months, according to local newspaper reports.
Many scientists fear such encounters will become more common as the bats' forests homes are destroyed and they are lured towards cattle ranches and farms where livestock and humans make easy prey.
The article dispels many myths about vampire bats -- they don't go for victims throat or break into houses to bite people. They also don't suck people's blood -- they just lap it up. Not that really sounds much better.
Also, instead of sucking the blood of their victims as is generally believed, vampire bats make a small tear in their victim's skin and lap at the blood as it oozes out. When the bats have finished their meal, they're often so engorged with blood that they're too heavy to fly. The bats have to crawl off their sleeping victims and go someplace to digest their meal before returning home.
The article says that most of the human victims are people that sleep outdoors or in huts without windows. But 23 deaths in two months is sure to cause some fear especially in people who can't afford proper shelter.
Posted on November 7, 2005
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Killer Tornado Strikes Southern Indiana
A powerful tornado has caused extensive damage and killed at least 11 people in Southern Indiana and Kentucky according to a CNN news story.
One resident of the trailer park told WFIE of Evansville she saw a tornado pick up a car with members of her family in it and toss the vehicle into a tree. Brandi Crawley said no one was seriously injured.
"The damage is very, very extensive," said Chad Bennett, an assistant fire chief in Newburgh in Warrick County. He said the area hardest hit was just north of the city limits.
"Now that daylight has come, it is making it a little more easy to see the scope of the damage, and it is very shocking."
Bennett estimated the damage path was about 3/4 of a mile wide and 20 miles long.
Before this tornado there had only been 7 killer tornadoes killing a total of ten people according to this page from the Storm Prediction Center. Tornadoes are not uncommon in November but the strength of this tornado does sound more like the tornadoes typically seen in May and June. The National Weather Service should release data about the strength of this tornado tomorrow.
Update: An MSNBC.com article quotes a local meteorologist who says the tornado was an F3 or higher.
Ryan Presley, a weather service meteorologist in Paducah, Ky., said a single tornado touched down near Smith Mills in western Kentucky and cut a 15- to 20-mile swath through Indiana's Vanderburgh and Warrick counties.
The tornado appears to have been an F3, with winds ranging from 158 mph to 206 mph, and may have been even stronger, Presley said.
Posted on November 6, 2005
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NASA: Fireball Sightings are Meteors
The fireball sightings around the world are likely meteors according to a NASA article. David Asher of the Armagh Observatory in Northern Ireland told NASA that people are seeing the Taurid meteor shower.
Most years the shower is weak, producing no more than five rather dim meteors every hour. But occasionally, the Taurids put on quite a show. Fireballs streak across the sky, ruining night vision and interrupting fishing trips.
Asher thinks 2005 could be such a year.
According to Asher, the fireballs come from a swarm of particles bigger than the usual dust grains. "They're about the size of pebbles or small stones," he says. (It may seem unbelievable that a pebble can produce a fireball as bright as the Moon, but remember, these things hit the atmosphere at very high speed.) The rocky swarm moves within the greater Taurid dust stream, sometimes hitting Earth, sometimes not.
"In the early 1990s, when Victor Clube was supervising my PhD work on Taurids," recalls Asher, "we came up with this model of a swarm within the Taurid stream to explain enhanced numbers of bright Taurid meteors being observed in particular years." They listed "swarm years" in a 1993 paper in the Quarterly Journal of the Royal Astronomical Society and predicted an encounter in 2005.
The article also links to this page on the International Meteor Organization's website that shows a Taurid peak falling between Nov. 5th and Nov. 12th so there should be more of the fireball sightings over the next ten days.
Posted on November 3, 2005
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Beta Causes Damage in Flooding in Nicaragua
Hurricane Beta made landfall on the central coast of Nicaragua as a Cat 2 over the weekend and caused significant damage according to an article in the Edmonton Sun.
The record 13th hurricane of this year's Atlantic storm season made landfall Sunday on Nicaragua's central coast, about 320 kilometres northeast of Managua, as a Category 2 hurricane before quickly weakening to a tropical storm and eventually becoming a tropical depression before beginning to dissipate.
Col. Mario Perez Cassar, Nicaragua's civil defence chief, said 80% of the buildings on the central coast were heavily damaged or destroyed.
There are no other tropical systems in the Atlantic basin being monitored by the National Hurricane Center but they are keeping their eye on a tropical wave located south of Hispanola. The Caribbean waters are still warm enough to sustain a tropical storm. The official end of the hurricane season is November 30th.
Posted on November 1, 2005
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