Unpressing the Flower – a New Burgess Shale Species

Siphusauctum gregarium
Artist's conception of Siphusauctum gregarium, a newly-described animal from the Burgess Shale Photo: Marianne Collins/ROM

This week, Lorna O’Brien realized what may well be every paleontologist’s dream: to be the first to describe a brand-new species. Hers is a slightly odd, stalked, filter-feeding creature which looks uncannily like a tulip, named Siphusauctum gregarium. It was found in strata from the Burgess Shale, Canada’s Cambrian fossil goldmine, which continues to produce new discoveries at regular intervals. “There’s been so much work done on the Burgess Shale in the past 100 years,” says O’Brien, a PhD candidate in Evolutionary Biology at the University of Toronto and the Department of Paleontology at the Royal Ontario Museum (ROM). “When I was an undergrad, I never thought I’d get the opportunity to name a Burgess Shale animal, so in that sense it’s been incredibly exciting.”

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Remembering Alfred Wegener

Alfred Wegener in 1929. Photo: Alfred Wegener Institute

“All truth passes through three stages. First, it is ridiculed. Second, it is violently opposed. Third, it is accepted as being self-evident.” This summary, usually attributed to German philosopher Arthur Schopenhauer, seem especially true of scientific knowledge. Take plate tectonics. The idea that surface of the earth is constantly changing as continents drift around on top of a layer of molten rock is so well established that it’s hard for most people to imagine otherwise. But exactly 100 years ago today, when a 31-year-old German meteorologist named Alfred Wegener presented this idea at a meeting of the Geological Association in Frankfurt, he was mocked. It would take decades and the work of many other scientists – including some prominent Canadians – to show that plate tectonics are as real as gravity and evolution.

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The Burgess Shale: A Secret Worth Sharing

A specimen of Anomalocaris canadensis from the Burgess shale, part of the ROM collection. (Photo by me).

Ever since I started this blog, I’ve been looking for an excuse to write about the Burgess Shale, a national treasure of science that has somehow remained a secret to many Canadians. Discovered over 100 years ago, these sedimentary deposits – situated on top of a mountain in British Columbia’s Yoho National Park – remain unsurpassed as the richest source of well-preserved fossils from the Cambrian period, which stretched from about 540 to about 490 million years ago. Hundreds of thousands of Burgess fossils have been recovered, and the story they tell constitutes a rare and vital peek into the beginnings of complex life on earth. Despite this, most Burgess fossils are only accessible to a handful of experts, and there are few places you can go to learn about them first-hand. All that changed on Thursday, when I was fortunate enough to be present at the launch of a new website dedicated making the Burgess Shale fossils accessible to all Canadians, and indeed the entire world. As Parks Canada CEO Alan Latourelle aptly put it, the Burgess fossils are “a secret worth sharing.”

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The Science of Dance, the Dancing of Science

Interpreting science for the general public is important, but that doesn’t mean it’s easy. Sometimes, no matter how many killer diagrams and visually stunning charts you have, or how refined and elegant your language, there is only one way to truly get your message across: interpretive dance!

The Dance Your PhD contest is the brainchild of John Bohannon, who writes the occasional “Gonzo Science” column in Science Magazine. The rules are simple: the participant must be (or at one time have been) a PhD candidate, and must appear in a video in which they use interpretive dance to explain their research. Beyond that, anything goes. Most videos include a number of collaborators, from lab mates to professional coreographers and special effects artists. This year, the fourth since the international contest started, saw a record 55 entries, which were then whittled down to a field of 16 semi-finalists. The field included two Canadians, one of whom won her category, and both of whom I had the pleasure of speaking with this week.

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Canada shines at 2011 Ig Nobels

Some people gather at a friend’s house to watch the hockey game. Others host Oscar parties. But the group of friends that gathered in my apartment last night were there to share a group viewing experience of an altogether more original kind: to cheer on Canada at the 21st Annual Ig Nobel Prize Ceremonies. We were not disappointed: among the ten winners were two Canadian scientists investigating, respectively, how temporarily blinding someone can impair their driving ability, and how a certain species of Australian beetle seems to prefer mating with beer bottles.

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Scrabble makes you . . . good at Scrabble

Scrabbletileset
Scrabble doesn't make you smarter, but it can re-wire your brain. Credit: Wikimedia Commons

This week, we got another great example of how science stories are often misinterpreted by the media. Articles in the Calgary Herald, Global News, and MSNBC all touted a new Canadian study which they say shows that ‘Scrabble makes you smarter.’ If this sounds too good to be true, that’s because it is. (To their credit, the folks at CBC appear to have done their homework.) However, the study’s real conclusion is no less interesting: it provides further evidence that the human brain can re-wire itself even into late adulthood.

The first step in getting past media hype is to look at the peer-reviewed article itself. (Happily, the good folks at Memory and Cognition have been kind enough to make this particular work open access, thanks guys!) From the abstract:

The results of a series of cognitive assessments showed that the Scrabble players and control participants differed only in Scrabble-specific skills.

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The Fanged Frogs of Sulawesi

Fanged Frog
A researcher shows the fang - technically bony odontoid processes - of one of the 13 species of fanged frog from the Indonesian island of Sulawesi. Credit: McMaster Daily News/Rafe M. Brown

Despite a name that sounds like it came from a bizarre horror film, the fanged frogs of Sulawesi are not particularly dangerous. In fact, the exact function of the fangs – technically bony odontoid processes – isn’t really known. “They could be used for defence, although it’s not clear that that’s true,” says Ben Evans of McMaster University “They certainly don’t bite you when you catch one in your hand.” What Evans does know is that these unusual critters are a perfect example of the evolutionary process of adaptive radiation.

Evans is an evolutionary biologist who has spent years studying the biogeography of the Indonesian island of Sulawesi. “Sulawesi is interesting because it’s near some large islands, but it’s biogeographically very distinct,” he says. “A remarkable and precipitous faunal divide occurs between Sulawesi and Borneo, which is famous in biogeography. It’s called Wallace’s line.” Alfred Russell Wallace, a well-known biologist and contemporary of Charles Darwin, worked extensively in the Indonesian archipelago, using it as a model system to understand the processes that affect biodiversity worldwide.

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Earth’s Newest Companion

Earth's Trojan asteroid companion, 2010 TK7
The purple lines show the path of Earth's most recently discovered companion, asteroid 2010 TK7. Credit: University of Western Ontario

It just doesn’t get any bigger than this: today a discovery by Canadian researchers is gracing the cover of Nature magazine. It is not an understatement to say that this is the science equivalent of getting your picture on the cover of the Rolling Stone, and I do sincerely hope Martin Connors, Paul Wiegert and their French colleague Chistian Veillet are enjoying their moment in the international spotlight.

So, what’s precipitated this moment of mass adulation and fame? An asteroid. Its name is a bit of a mouthful, 2010 TK7, which according to my limited understanding of the vagaries of the provisional naming system, means it was first discovered in early October of 2010, and that it was the 185th new object to be discovered in that two-week period. But what’s made it so famous is that it seems to be the first example of a Trojan companion for the Earth.
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Is the Internet Damaging Our Memories?

Marshall McLuhan
Marshall McLuhan in 1967. Credit: Yousuf Karsh, Library and Archives Canada, www.collectionscanada.gc.ca

Were he still alive, today would have been the 100th birthday of Marshall McLuhan. While most Canadians have heard of him, and might even be able to rattle off his famous, cryptic aphorism, “the medium is the message,” a complete understanding of his theories is beyond most, including some who think they know. Still, his general point – that the electronic media have fundamentally altered our consciousness – seems intuitive enough. On my smart phone, I have instant access to access to all human knowledge via the Internet. It’s an amazing ability, but like many people, I sometimes worry that having this super power has made me less likely to retain information myself. Is my own memory in danger of being made obsolete by Google?

I was thinking about this while reading through a study published in Science last week by Betsy Sparrow and her colleagues in the Department of Psychology at Columbia University.Continue reading

Misunderstood Mosasaur: New Genus Discovered

MosasaurMaastricht080910
Mosasaur skeleton at Maastricht Natural History Museum, The Netherlands. Credit: Wilson44691 via Wikimedia Commons

As you may have noticed, I’m a big fan of stories about extinct animals, and the University of Alberta can usually be relied on to crank them out at regular intervals. Last week, a paper in the Journal of Vertebrate Paleontology proposed a major re-organization of the mosasaurs, sometimes called the “T-rex of the sea.”

Mosasaurs essentially looked like giant, sea-going crocodiles, with flippers for limbs and a big fluked whale-like tail. They were not dinosaurs; rather they were the biggest members ever of the order Squamata, which today includes all snakes and lizards. And I mean big; mosasaurs routinely reached sizes of 15 metres or longer. Continue reading