evolution
grrlscientist | October 4, 2008tags: John Scopes, Scopes Monkey Trial, Tennessee v. John T. Scopes Trial, evolution, creationism, religious fundamentalism, education
Tennessee v. John T. Scopes Trial: Privies outside the Rhea County (Tennessee) courthouse with "Read Your Bible" sign.
Image: Watson Davis (1896-1967), courtesy of the Smithsonian Institution (copyright free). [larger view].
For the first time ever, a series of 39 original photographs from the 1925 Scopes Monkey Trial are now available for your viewing pleasure.
Description: Taken during the Tennessee v. John T. Scopes Trial. July 1925
Creator/…
grrlscientist | October 3, 2008tags: DonorsChoose2008, education, public school education, fund raising, evolution education, nature education, bird education
Today's featured project is below the fold.
This is a rural high-poverty school in North Carolina. The teacher is a bird watcher who also lives with pet birds, and she seeks to instill this love for birds into her students. In this proposal, she and her students will learn about the diets of owls by dissecting owl pellets and examining the remains of insects and bones from small animals that the owls cannot digest.
"Whooo's in the Forest?" Part II
I teach a…
zooillogix | October 3, 2008How we missed this the first time around I will never know, nor forgive our readers for. Enjoy!
Thanks to Mike McElwain for sending along. yitb
grrlscientist | October 2, 2008tags: DonorsChoose2008, education, public school education, fund raising, evolution education, nature education, bird education
One of the highest poverty areas in America is in Washington DC, our nation's capital. That's just disgusting. But we do not need to let the kids who live there succumb to the rampant despair of broken dreams, poor health and poverty. This proposal seeks to give these kids wings by teaching them about birds. Birds are a magical gateway into biological sciences; drawing kids into learning about the wonders of evolution and behavioral ecology and conservation. I know…
mikethemadbiologist | October 2, 2008This will be something of a technical post, but I've decided to pick the hivemind's brain. In some projects I'm involved with, we're generating lists of SNPs for a bunch of bacterial strains using Illumina.
For a given strain, anywhere from ten to forty percent of the SNPs are indels (actually 'SNP' is a bit of a misnomer because we can detect small multi-nucleotide insertions and deletions). Here's the question: is there any way to use maximum likelihood methods with indels? I could just use parsimony methods, and treat the indels as characters, but I don't want to lose information about…
sa smith | October 2, 2008Holy crap.
Do you guys remember how Per Ahlberg got his big break? He sifted through the fossil collection at the London Natural History Museum, found friggen tetrapod?
Someone just did the same thing with HIV-1.
Michael Worobey dug through prehistoric (1960s hehe) tissue samples hunting for early HIV-1 sequences.
Now by 'tissue samples' I dont mean nicely labeled bits of tissue, organized and cataloged in bright fluorescent boxes, in perfect little cryovials, stored at -80 C.
I mean dude dug through chunks of flesh soaked in formaldehyde and embedded in wax, and have been sitting at room…
revere | October 2, 2008Scientists have been using genetic data to estimate when species first appeared for some time. The basic idea is to use differences between species and a guess as to how fast sequences change as a molecular clock, running it backward until they show the same sequence. The same trick can be done with viral genetic information. If you know the genetic sequence of a virus at one point in time and then at a later time you can make an estimate of how fast the clock is ticking. An analysis along these lines has just been done with a newly found lymph node sample from Kinshasa (Democratic Republic…
gregladen | October 1, 2008Welcome to the Third Edition of the Carnival of Evolution. The previous edition of this web log 'carnival of the vanities' was at Jason Rosenhouse's Evolution Blog. The next edition will be written by Mike (TUIBG) and hosted here, at Clashing Cultures.
Please submit your web posts on Evolution for the next carnival, which is slated for Mid October! Use this handy dandy submission form. And now, on with the show:
Newly reconstructed Neanderthal female. (View larger image) A Very Remote Period Indeed presents Fear and Loathing in the Pleistocene.
"... [the] narrator announces "Today,…
grrlscientist | October 1, 2008tags: DonorsChoose2008, education, public school education, fund raising, evolution education, nature education, bird education
Mrs. G is seeking supplies for a microbiology lab. I, as a microbiologist, recognize the value (and the intense fascination!) of teaching students about the natural world, particularly microbes!
I teach 7th grade Science in a school where the majority of the students are classified as Title 1, meaning that they need remedial help with their basic skills. Even without that classification, students this age are hard to motivate, especially in the content area of…
gregladen | September 29, 2008Fossils of a newly discovered species of dinosaur -- a 10-meter-long, elephant-weight predator -- were discovered in 1996 along the banks of Argentina's Rio Colorado, and are now being reported after a long period of careful study. This dinosaur dates to about 85 million years (which falls within the Cretaceous period).
Perhaps the most interesting feature of Aerosteon riocoloradensis is that it demonstrates the evolution of a bird-like respiratory system in an animal that is definitely not bird-like in most other ways. Indeed, the authors of this paper imply that this dinosaur's…
clock | September 29, 2008I always get excited when Paul Sereno publishes a paper in PLoS ONE and today is one such day - his third paper in this journal within a span of less than a year (the first was the paper with detailed description of Nigersaurus and the second was the article on Green Sahara cemeteries). Today's paper is also the second time PLoS ONE publishes a taxonomy paper, i.e., a monograph that describes a new species:
Evidence for Avian Intrathoracic Air Sacs in a New Predatory Dinosaur from Argentina:
Background
Living birds possess a unique heterogeneous pulmonary system composed of a rigid, dorsally-…
grrlscientist | September 29, 2008tags: Birdbooker Report, bird books, animal books, natural history books, ecology books
"One cannot have too many good bird books"
--Ralph Hoffmann, Birds of the Pacific States (1927).
The Birdbooker Report is a special weekly report of wide variety of science, nature and behavior books that are or soon will be available for purchase. This report is written by one of my Seattle bird pals, Ian "Birdbooker" Paulsen, and is published here for your enjoyment. Here's this week's issue of the Birdbooker Report by which lists ecology, environment, natural history and bird books that are (or will…
evolvingthoughts | September 28, 2008
Readers know I think religion is post-agricultural, which raises some difficulties if we find evidence of organised religious behaviours before the onset of agriculture. The case in point here being Göbeli Tepe. Now a recent model of the process of cereal domestication has set back the beginnings of agriculture some ten thousand years earlier than the c10kya version, the "rapid onset" model, in favour of a "protracted transition" model.
Agricultural Biodiversity Weblog has a very nice roundup of the issues, and there is a summary at Science Daily. The crucial question resolved by this…
awild | September 28, 2008Via The Other 95% comes an absolutely charming animation set to the British public's opinion on evolution.
If the style looks familiar, it's from Nick Park, the creator of Wallace and Gromit.
evolvingthoughts | September 28, 2008
It all began with Larry Arnhart giving a "Darwinian" account of the case for financial bailouts. Then David Sloan Wilson rejected the argument from the Invisible Hand. Then Massimo Pigliucci entered the fray. What's at issue?
There are two basic extremes in economics: laissez faire and command economies. The former suppose, with the overextrapolation of Adam Smith's Invisible Hand, that a truly unbiased and free market will generate goods better than any other economic system. The latter is socialism, and supposes that a central planner, usually the State, will control economies reducing…
evolvingthoughts | September 27, 2008
If any of my readers are good knitters, check this out:
The pattern, not the girl. Preverts!
Hat tip: Colin Purrington
sporte | September 27, 2008One of the holy grails of modern medicine is the development of a vaccine against HIV, the virus that causes AIDs. An obstacle to attaining this goal has been the difficulty in stimulating the immune system to make it produce the right kinds of antibodies. A recent finding in Science describes a gene that controls production of these antibodies and may provide insights to the development of an effective vaccine. (1).
Antibodies are special kinds of proteins that bind to things, often very tightly. If they bind to the right molecules, they can prevent viruses from infecting cells and target…
grrlscientist | September 25, 2008tags: researchblogging.org, Seychelles magpie-robin, Copsychus sechellarum, behavioral ecology, conservation biology, endangered species, population dynamics, ornithology, birds
Seychelles magpie-robin, Copsychus sechellarum.
Image: Tony Randell (Wikipedia) [larger view].
Every once in awhile, I read a paper that surprises me. Today, I read one of those papers, and it surprised me because it analyzes a phenomenon that is so obvious that I wonder why no one ever thought of studying it in a systematic and rigorous way before. I am referring to a paper that was just published by a team of…
mikethemadbiologist | September 24, 2008Five, actually. This showed up on a listserv I'm a member of:
NCSE and The Panda's Thumb are recruiting scientists named Steve, or Stephanie, or Stephen, or Esteban, et al. to join Project Steve, a tongue-in-cheek response to creationists. All members of Project Steve agree with the following statement:
Evolution is a vital, well-supported, unifying principle of the biological sciences, and the scientific evidence is overwhelmingly in favor of the idea that all living things share a common ancestry. Although there are legitimate debates about the patterns and processes of evolution, there…
laelaps | September 24, 2008
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…