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What I'm Saying at AAAS

Since I had to have the slides for my AAAS talk ready well in advance, I might as well let you look at them more or less as I give the talk. So, courtesy of SlideShare, here's the presentation I'll be giving right around the time this is scheduled to post: What Physics Knowledge Is Assessed in TIMSS Advanced 2008? View more presentations from Chad Orzel. the question I was asked to talk about is whether the released questions from the Trends in International Mathematics and Science Survey test from 2008 do a reasonable job of covering what we want physics students to know coming in. The…

Vancouver ScienceBlogger meet up. September 18th, 6pm, Koerner's Pub UBC.

Now that the world is safe, Jennifer (from Shifting Baselines) and I are going to be buzzing around one of local watering holes (Koerner's pub) on Thursday, September 18th, from 6pm. As well, we have a little pocket money from Seed which should be good for one or two rounds (depending I guess on how many folks turn up). Anyway, if you hail from Vancouver or are within reach, and feel like coming down for a beer (Koerner's has some good stuff), then do come by and say hello. Here is a link to let you know the whereabouts of Koerner's and I've also set up a Facebook event page just so that we…

Even our fonts will betray us?

According to Christina Warren at mashable.com, the switch to allowing non-Latin alphabet characters in web domains could give scammers a brand new toolkit. That's because browsers can't render many non-Latin characters, and the approximations may be doppelgangers for trusted sites. Alternatively, an address in an alphabet like Cyrillic, which shares certain letterforms with the Latin alphabet, can appear indistinguishable from pre-existing Latin-alphabet addresses: Uh-oh. It's only fair that users of different alphabets get to register their own addresses, but clearly there needs to be some…

A Link Between Dugongs and Elephants

A comparison of carbon/oxygen isotope ratios from the tooth enamel of two early proboscideans, Moeritherium and Barytherium to other animals of the same era (circa 37 mya) revealed to researchers the possibility of a ancient, semi-aquatic animal, linking the speculated split of dugong and elephant from a common ancestor. "The scientists" (as the article begins; that's some lead) said that they have: ...substantial evidence to suggest that modern elephants do have ancient relatives which lived primarily in water. The next steps are to conduct similar analyses on other elephant ancestors to…

Who Owns The Black Swan? Pt II

Yesterday in Part I, I noted that a Spanish newspaper published a picture allegedly from a port employee showing a coin with a bust of King Charles III, ruler of Spain in the 18th century, suggesting the Black Swan was indeed Spanish. Greg Stemm, co-founder of Odysssey Marine Exploration stated the coin featuring Charles pictured in the papers is not from the wreck. Yesterday Roy stated that the picture in the paper was from the Franklin Mint Website (above). The newly developed Merchant Royal Shipwreck Blog (interesting indeed) notes that the picture below is the picture from the…

SI/USGS Weekly Volcano Activity Report for 6/10-16/2009

Your weekly dose of volcano news brought you by the Smithsonian Institute GVP and the USGS. This week's highlights (not counting Sarychev Peak and Turrialba) include: 13,000 foot / 4 km ash plumes from Rinjani in Indonesia. This is part of the continuing eruption there. The alert level was lowered at Galeras, Colombia to "Orange" after intense eruptions last week. The current lava dome at Redoubt is 1 km long, 460 m wide, and 200 m high according to the latest images from the Alaskan volcano. 18,000-23,000 foot / 4.8-7.7 km ash plumes from Shiveluch in Kamchatka, along with thermal anomalies…

Black girls more likely to be bulimic?

Black Girls Are 50 Percent More Likely To Be Bulimic Than White Girls: Rather, girls who are African American are 50 percent more likely than girls who are white to be bulimic, the researchers found, and girls from families in the lowest income bracket studied are 153 percent more likely to be bulimic than girls from the highest income bracket. "As it turns out, we learned something surprising from our data about who bulimia actually affects, not just who is diagnosed," says USC economist Michelle Goeree. Surprised me. Then again, whenever when I watched Law & Order on the airplane I'm…

Japan quake, tsunami, nuke news 15: Water leaking into sea via crack, and concerns over hydrogen buildup

Despite the deafening silence from TEPCO regarding questions over a physical breech in Reactor 2, it is now generally being considered that there is a breech in reactor 2. It is not clear if it is a hole in the containment vessel of some kind or just some disconnected or cracked pipes. Experts are estimating the percent of fuel in the reactors that were active at the time of the quake that has been damaged as fairly high (over half). The most significant news over the last several hours is probably the identification of a major route by which radioactive water is leaking from Reactor 2…

Question of the Day: How Do You Get Crabs From A Gorilla?

If pubic lice are not the sort of thing you want to be seen reading about, let me give you the opportunity to close your browser window right now. But if you're at all curious about the secret that pubic lice have been keeping for over three million years, the tale of a mysterious liaison between our ancestors and the ancestors of gorillas--read on. Many parasites tend to stick close to their hosts. A parasitic wasp may wander through forests and fields to find a caterpillar from a single species of butterfly in which it will lay its eggs. Blood flukes taste the water of their ponds for…

In search of "Eohomo"

During his 1876 tour of the United States, the famed anatomist and popularizer of science Thomas Henry Huxley stopped to see the American paleontologist O.C. Marsh at Yale. Marsh provided his esteemed guest with access to his ever-growing stores in the Peabody Museum, showing Huxley toothed Cretaceous birds and an array of fossil horses that convinced Huxley that the horse was a creature that had evolved in the New World, not the Old. Indeed, Marsh had collected an impressive array of fossil horses, from tiny forms with many toes to the familiar one-toed Equus. Given the transitions that…

Swine flu: genetics of the novel virus

Last week another expedited-review paper appeared in the high profile journal Science, this one summarizing the genetics of the novel H1N1 influenza A virus causing the current outbreak cum pandemic. This time there is quite a bit of interesting material in this paper for non-virologist scientists with a strong interest in knowing what we are dealing with. And the first conclusion is that we are indeed dealing with swine influenza, whatever else you want to call it. Here is a short summary of the paper, which can be found here. Influenza was identified as a viral disease in 1930 when it was…

"Noise is good" - Breaking the silence on occupational health and safety in Asia

by Elizabeth Grossman I'm on my way home from Indonesia, where I spent part of the past week attending the annual meeting of the Asian Network for Occupational Accident Victims (ANROAV), an organization that brings together NGOs working on occupational health, safety, and labor issues all across Asia. The meeting was held in Bandung, in West Java -- the most densely populated part of Indonesia -- about a three-hour drive (or six, depending on traffic) east from Jakarta. When, thanks to North American jetlag, I woke before dawn as the day's first motorcycles began to zip along the palm-lined…

REPOST: Q&A: Immune system 'strength' & influenza

After I put my post up on this years influenza fiasco on Friday, the CDC declared it an official 'epidemic'.  Since one of the main excuses for not getting the shot this year are “It’s a hassle.”/“Number one, I’m lazy” (UUUUUUUGH THAT WAS ME TOO! GET THE SHOT!! The flu SUCKED!!!!), I thought it would be a good time to repost an article I wrote last year. You should get the vaccine, if not for you, for the people around you. ----------------------------- EMAIL! (technically, a paraphrased really great question from someone at FreeOK!) Dear ERV-- Is there any reason why I, a young healthy adult…

The Physics of a Bottomless Pit

"Where you used to be, there is a hole in the world, which I find myself constantly walking around in the daytime, and falling in at night." -Edna St. Vincent Millay I'm sure you've thought about it before: what would happen if you dropped something into a bottomless pit? Image credit: original source unknown. No, not one of those fake bottomless pits that you find in various Mystery Spots off the beaten trail. Image credit: Mel's Hole, courtesy of http://komonews.com/ in Seattle, Washington. Those may be deep, but they're definitely not bottomless. And I want something truly bottomless…

History restricts and guides the evolution of innovations

When it comes to evolution, a species' past has a massive bearing on what it might become. That's the latest message from a 20-year-long experiment in evolution, which shows how small twists of fate can take organisms down very different evolutionary paths. The role of history in evolution is a hotly debated topic. The late Stephen Jay Gould was a firm believer in its importance and held the view that innocuous historical events can have massive repercussions, often making the difference between survival and extinction. To him, every genetic change is an "accident of history" that makes…

Neural Adaptation for Gender

In yesterday's post on afterimages and aftereffects, I mentioned that demonstrations of neural adaptation for a particular feature (in the post, I used the examples of color and motion) is generally taken as evidence of the existence of specific neurons or groups of neurons that detect/process that feature. With motion or color, which are very basic features of the visual environment, this isn't very surprising, but in this post, I'm going to talk about some recent research demonstrating neural adaptation for a much more complex and surprising feature. But first, a little background on…

The Australian's War on Science XII part 2

As well as Chapman's silly ice-age article, the Australian published a news story about it, treating it as if it was a legitimate paper and failing to get comments from climate scientists. The ABC acted like a real news organization it its report: DAVID KAROLY: This is not science. EMILY BOURKE: David Karoly from Melbourne University's School of Earth Sciences is outraged. DAVID KAROLY: This is misinterpretation or misrepresentation and miscommunication of the factors that influence global temperature. It appears to be an opinion of Phil Chapman and he's welcome to his opinion, but in terms…

The origins of the Yakuts

One of the more substantive consequences of the powerful new genomic techniques has been in the area of ancient DNA extraction and analysis. The Neandertal genome story is arguably the sexiest, but closer to the present day there've been plenty of results which have changed the way we look at the past. The input of genetics has basically demanded a revision of the contemporary consensus of the origins of the Etruscans which emerged from archaeology. Though certainly ancestry and genetic relationship are informative, ancient DNA has also given us windows into the change of function and a…

CoRoT on for 20th

Definitive word on the CoRoT results... Heard by e-mail from an authoritative source, and independently sourced from spacEurope (see comments in CoRoT update thread) that there will be a press conference and associated press release on the early results from CoRoT on 20th December.

O'Reilly Threatens Caller

Wow, another classic from Olbermann - a stunning bit of audio that has Bill O'Reilly telling a caller that he was going to get a visit from Fox security because he mentioned Olbermann's name on the air. It's just incredible to hear. Here's the report from Olbermann's show:

Saturday afternoon YouTube gem: Absolute Beginners

Here's one of my all time favorite David Bowie tunes, truly an underrated gem from his career. (Too bad the movie it came from was only so-so.) This performance is from June 2000: Why? Because Christmas is coming and I felt like it. Enjoy!

Traversing Graphs

One amusing thing in graph theory is graph traversal. Many of the interesting algorithms on graph are ultimately based on the idea of iterating through the nodes of the graph in some order that is related to the structure of the graph. There are two fundamental orders of graph traversal, known as breadth-first and depth-first. They're actually hard to explain in a comprehensible way - but they're pretty easy to understand by example. So let's look at a graph, and do its depth-first and breadth-first traversals; then we'll look at some pseudo-code to explain the details. We'll start with…

Bird flu. What? Me worry?

A survey of doctors specializing in the infectious diseases of children attending a conference showed over half weren't very worried about a bird flu pandemic. I guess they know something I don't. Or maybe I've been reading the wrong things. Things like this: The H5N1 bird flu virus in Indonesia may have undergone a mutation that allows it to jump more easily from poultry to humans, the head of the country's commission on bird flu control said on Wednesday. [snip] "In the past it took exposure of high intensity and density to the virus to get infected. There are now suspicions, early…

Ancient spiders

Spiders are amazingly sophisticated animals, and probably the premiere complex adaptation of modern spiders is the ability to spin silk. They have multiple internal glands that can produce multiple kinds of silk — webs contain different kinds, from structural strands to adhesive strands, and other kinds are used for spinning egg cases and for wrapping prey — and they are sprayed out through small spigots mounted on swiveling spinnerets, which are modified opisthosomal (abdominal) limbs. Obviously, these detailed features did not spontaneously appear all at once, but had to have evolved…

New Frontiers: Big Questions Conference IV

Continued slow liveblog of the New Frontiers in Astronomy and Cosmology Conference at the Franklin Institute. Lunch is almost over and we are headed into the final session of research presentations, clearly saving the best for last... I am also reminded why we have these meetings, in person, the chats during break and back and forth in sessions provides very dense information transmission and tight feedback loops on news. Big Question IV - Are we Alone in the universe? Or, are there other life and intelligence beyond the solar system? 1) Jonathan Lunine from Cornell on "The search for life…

More on conflicts of interest in medical research

by revere, cross-posted from Effect Measure Tufts University is the latest institution to step in the Conflict of Interest mess and come out with shoes that smell. The University had organized a conference on conflict of interest in medicine and research, with Iowa's Republican Senator Charles Grassley as the keynoter. Grassley has been an indefatigable crusader against instances of fraud and abuse against the federal government, and is a principal author and defender of the Federal False Claims Act, which allows whistleblowers to share in the recovery of fraudulently obtained monies (for an…

Report of Ebola death in London

Scary. A woman is feared to have died from ebola after taking ill on a plane home from Africa yesterday. Passengers and crew on the flight to Heathrow are understood to be panicking that they have contracted the contagious virus. They helped the Briton when she was vomiting and bleeding. Some even shared their drinks with her. Last night, tests were being run to confirm whether she had the haemorraghic fever. The 38-year-old was on Virgin Atlantic flight VS602 from Johannesburg. It is understood she worked at an embassy in Lesotho. (Continued after the jump) First, I'll note that this story…

Study: Prescription drug monitoring programs lead to less opioid prescribing

In 2014, more than 28,000 people in the U.S. died from an opioid overdose. That same year, more Americans died from drug overdoses than during any other year on record, with the escalating numbers fueled by opioid abuse. Solutions to the problem are as complex as the epidemic itself, however a recent study pointed to one tool that can make a significant difference: prescription drug monitoring programs. In a study published this month in Health Affairs, researchers found that implementation of a prescription drug monitoring program was linked to a more than 30 percent reduction in the rate of…

Medieval Genius Sculptor Vaporised

Names are one of the things that separate historical and archaeological thinking from each other. History is full of people of whom little is known beyond their names and perhaps a royal or ecclesiastical title, yet still they are considered to be historical personages. Meanwhile, a dead person found in a nameless prehistoric grave can never attain the same historical stature regardless of the objects preserved with the body and the scientific data extracted from the bones. This fixation with names was once a characteristic of art historians as well. One of the differences between Medieval…

Tit for tat

Readers here are probably already familiar with the Wegman report "strange scholarship" scandal but if not read up on it a bit at Eli Rabbet's place. The mess goes much deeper, but the relevant aspect is an ongoing plagarism investigation into Wegman by George Mason University. The GMU investigation was pushed forward by a formal complaint by Raymond Bradely because passages from his text, Paleoclimatology: Reconstructing Climates of the Quaternary, were copied and placed verbatim, uncited and without quotation marks into Wegman's report. Now, to the subject of this post. I don't recall…

Astrology and Gravity

There's a classic problem in physics textbooks which asks you about astrology. It's sometimes said - the problem will tell you - that the gravitational pull of the doctor delivering you is stronger than that of Jupiter, therefore it's unlikely that the planets are exerting a whole lot of influence on your life. The problem asks you to check this. Of course gravity is not generally purported to be the conduit of the supposed influence of the zodiac, but it's an interesting problem. And in fact it will turn out that Jupiter generally has the doctor beat, but not by that much. It's a neat…

The cutaneous rabbit illusion hops out of the body

IF a rapid series of taps are applied first to your wrist and then to your elbow, you will experience a perceptual illusion, in which phantom sensations are felt along the skin connecting the two points that were actually touched. This feels as if a tiny rabbit is hopping along your skin from the wrist to the elbow, and is therefore referred to as the "cutaneous rabbit". The illusion indicates that our perceptions of sensory inputs do not enter conscious awareness until after the integration of events occuring within a certain time window, and that the sensory events taking place at a certain…

Climate Audit follies

In the discussion on this post, per posted an abusive comment, violating my comment policy. I've had to ban him twice before (see here and here), so I simply banned him again, deleting the offending comment and the few that he posted after that. That should have been the end of it, but the folks at Climate Audit decided to branch out from their unending attempts to find fault with the hockey stick paper into an investigation of my comment policy: In this posting John A falsely claimed that I had deleted all of per's comments because I disagreed with them. This prompted a flood of abusive…

Beautiful and terrible

This is one of the loveliest fossils I've ever seen. They are the bones of a Neanderthal, found in a cave in southern Italy, and although they've been calcified by mineral-rich water trickling through the cave where they were found, it's an almost complete skeleton, with the bones all intact. That's the grisly part of the story. This person apparently fell into a hole in the karst landscape and was trapped -- he's presumed to have starved to death there. There were no predators able to reach him, either, so his body decayed in place, his bones slumped into a pile, and the slowly accumulating…

Blogging the Storm, Part 1

The view from my desk in the kitchen is a sunny garden near the bay, but Tropical Storm Dolly is moving slowly west from 200 km off the coast here in the Gulf of Mexico. I am "in the Cone", but seem to be sidestepping the projected landfall as Dolly veers slightly southwest. The one question on my mind, though, is how and will this tropical storm intensify? I know about Jack Diddly to tell you much about hurricanes, but my oceanography professors at HRI/TAMU-CC are seasoned professionals, so I can share a few things. Yes, that's "oceanographers" plural. Last year we had a reading class with…

War on Christmas heats up with vigorous action on multiple fronts

The Muslims have entered the fray now — one crazy lawyer, Anjem Choudary, is calling Christmas evil. How can we godless top that? The very concept of Christmas contradicts and conflicts with the foundation of Islam. Every Muslim has a responsibility to protect his family from the misguidance of Christmas, because its observance will lead to hellfire. Protect your Paradise from being taken away - protect yourself and your family from Christmas. Have no fear. We can say something much, much worse. Here's an elementary school teacher who told her class that Santa wasn't real. The reaction from…

Tet Zoo picture of the day # 26

The other day I had to prize the skeletal jaws from a dead hedgehog. Well, ok, I didn't have to... And what's with all the Green woodpeckers Picus viridis that are around at the moment? Still, I remain very very busy with day-jobs and conference preparation, but in the interests of - as promised - keeping Tet Zoo ticking over, here is a lovely picture that will have many of you cock-a-hoop with excitement. My god, I'm turning into Mark Witton... ... no, of course not. The picture depicts (left to right) the basal placodont Placodus gigas from Middle Triassic Germany, the cyamodontid…

(Don't) Send in the Clones

Although the government has approved meat and milk from cloned animals while it conducts further studies, the nation's largest milk company, Dean Foods Co. of Dallas, said recently that its customers and consumers won't purchase milk from cloned animals. The $10 billion company owns Land O'Lakes and Horizon Organic, among dozens of other brands. "Numerous surveys have shown that Americans are not interested in buying dairy products that contain milk from cloned cows and Dean Foods is responding to the needs of our consumers," the company said in a statement. Well, what about milk and other…

Party in Oklahoma!

All sensible people want to get rid of the shrill kook and raging homophobe Sally Kern from the Oklahoma government — and she has some competition in the coming election. Get out there and party with Ron Marlett at the end of this month, and raise a little money for his campaign! From Ron Marlett, Democratic candidate to remove Sally Kern from the public payroll Dear Friends, I wanted to let you all know of the "Rock Your Freedom" concert and rally we have scheduled for Saturday, August 30th from noon to whenever the last band hits its last power chord. It will be held at Eldon Lyon Park…

Bacterial metagenomics on the JHU campus: analyzing the data, part I

For the past few years, I've been collaborating with a friend, Dr. Rebecca Pearlman, who teaches introductory biology at the Johns Hopkins University. Her students isolate bacteria from different environments on campus, use PCR to amplify the 16S ribosomal RNA genes, send the samples to the JHU core lab for sequencing, and use blastn to identify what they found. Every year, I collect the data from her students' experiments. Then, in the bioinformatics classes I teach, we work with the chromatograms and other data to see what we can find. This is the first part of a four part video series…

Violence Against Healthcare Workers in Nursing Homes and Psychiatric Hospitals

Researchers from the National Institute for Occupational Safety and Health analyzed data on nursing-home employees from the 2004 National Nursing Assistant Survey and learned the following about on-the-job violence: Thirty-four percent of nursing assistants surveyed reported experiencing physical injuries from residents' aggression in the previous year. Mandatory overtime (odds ratio [OR] = 1.65; 95% confidence interval [CI] = 1.22, 2.24) and not having enough time to assist residents with their activities of daily living (OR = 1.49; 95% CI = 1.25, 1.78) were strongly associated with…

Silent Extinctions

Linepithema flavescens, last seen in 1934 Linepithema flavescens, a small yellow ant from Haiti, is one of the species I re-described as part of my Ph.D. dissertation.  All we know about this ant, apart from the brief notes on the specimen labels, is the external appearance of a few workers.  Queens and males haven't been collected.  No one has studied its ecology or behavior.  The few existing museum specimens- gathered from two different field sites- may be too valuable to attempt DNA extraction. A 1934 collection is the last time anyone has ever seen L. flavescens. As the natural…

I can haz domesticashun?

A recently published study has used microsatelite markers to discover that domesticated cats originated in the Middle East, a finding that reinforces earlier archeological research. The abstract reads: The diaspora of the modern cat was traced with microsatellite markers from the presumed site of domestication to distant regions of the world. Genetic data were derived from over 1100 individuals,representing 17 random-bred populations from five continents and 22 breeds. The Mediterranean was reconfirmed to be the probable site of domestication. Genetic diversity has remained broad throughout…

Why Is Liberia Being Robbed?

Yesterday the BBC aired an investigative report documenting how American "vultures," such as New York-based Eric Hermann at hedge fund FH International, bought up debt from Liberia for pennies on the dollar and are now forcing Liberia's impoverished government to pay in full. This is at the same time that Western governments have been erasing this odious debt from years past. The effect of Hermann's financial maneuvers earns few applause in Liberia. In that African democracy, diplomat Winston Tubman tells us what he would say to vulture fund operators, "'Do you know you are causing babies to…

New Species appropriately nicknamed 'Sparklemuffin' and 'Skeletorus'

I really never thought of spiders as being "pretty" until I came across these two new species of peacock spiders discovered in southeast Queensland, Australia by Madeline Girard (graduate student from the University of California, Berkeley, who is specializing in peacock spiders). Peacock spiders are not only beautiful, they also engage in elaborate dances during courtship. According to a quote from Jürgen Otto (posted in Live Science), who was a co-author in the study, Skeletorus "looks dramatically different [from] all other peacock spiders known to date, making me think that this group is…

'Comparative Approaches to Grand Challenges in Physiology'

Image from the American Physiological Society's website.http://www.the-aps.org/mm/Conferences/APS-Conferences/2014-Conferences/… Phew!! I just submitted my abstract for the Comparative Physiology meeting that will be held this October. Judging from the preliminary program, it is going to be an exciting meeting! Here is a description of the meeting from the American Physiological Society's website: "Comparative physiology takes advantage of the diverse evolutionary histories and ecological settings of animals. By definition, comparative physiology is broad, spanning a variety of animal taxa…

Anyone for a Sunday Outing?

Great idea, but don't do what these guys did. Five SCUBA divers from Euope went diving in the vicinity of Indonesia in waters known to be very treacherous. They quickly became separated from their boat, and floated in shark infested waters for two days. Then, they found an island, and crawled onto the island to be safe. Big mistake.... The island was infested with giant Komodo Dragons who tried, it seems, to eat them. And why not? These humans are well within the normal size range for Komodo Dragons, and were probably pretty easy to catch, being tired and all. The stranded divers kept…

Climate Echo Chamber

Last year I banned per/David Bell from commenting for a few days after he abused another commenter. This prompted an attack on me from ClimateAudit where commenters wrote falsehoods like this: Lambert knows his facts are weak, as such he does not allow others to comment upon them, otherwise the house of cards tumbles down. Recently Lee and John Hunter were banned from commenting at ClimateAudit. The pretext was incivility. Here's what Lee wrote that got him banned: JohnA, as always, you misstate my argument into something that is not what I actually said, and then argue based on what you…

Canadian Coral Hunting

A three-week Canadian expedition recently finished that documented a protected area near Sable Island referred to as the Gully. The Gully is the largest submarine canyon in eastern North America, approximately the size of the Grand Canyon. The submersible expedition can be classified as a success obtaining 3,000 digital images, hours of video footage, and multiple samples. One of the goals of the expedition was to increase knowledge on the distribution of deep-water corals. The team discovered a new species of bubblegum coral, a single-cell organism the size of a grapefruit (Xenophyophore…

Seal Oceanographers

We've talked about deep-diving seals here before. Now it appears oceanography is being outsourced to Antarctica. Grad students beware, seals are the latest species to steal deep-sea jobs away from hard-working americans! The Sunday Times UK reports: "SCIENTISTS are uncovering the deepest secrets of the freezing Antarctic waters by enlisting elephant seals to carry probes to places never before reached by humans. The seals' diving ability is being used to collect data from far beneath the ice shelves of the Antarctic coastlines as well as from the open sea. The creatures can reach depths of 6,…