biology
bioephemera | October 25, 2009OK: I'm female AND a biologist, and looking at this one freaks ME out!
I'm all in favor of appreciating the beauty of female anatomy and miracle of childbirth and all, but this pasty, long-limbed newborn doll with a detatchable umbilical is nothing compared with its laboring parent, who, in this photo from its etsy creator CozyColeman, looks a lot like Grendel's mom. It's as NSFW as crochet gets, I guess, so it's below the fold.
Yikes! Maybe I'm being uncharitable, but I think if you want to make the thought of pregnancy and childbirth horrifying yet eerily fascinating to your pre-teen…
grrlscientist | October 23, 2009tags: Project Kaisei, Oceanography, North Pacific Gyre, North Pacific Garbage Patch, plastic, pollution, environment, streaming video
Project Kaisei's 2009 Expedition. Footage from the Kaisei, one of two research vessels Project Kaisei sent to the North Pacific Gyre in August, 2009 to study the extent of the marine debris problem in the gyre, the impact it may be having on marine life and the food chain, and to find ways to catch and recover some of the debris for a larger clean-up effort.
razib | October 21, 2009Pamela Ronald of Tommorow's Table, author of Tomorrow's Table: Organic Farming, Genetics, and the Future of Food. Additionally, David Sloan Wilson, has moved his blog to ScienceBlogs. It's called Evolution for Everyone, after the book of the same name. You can read my review of his book here.
scientificactivist | October 20, 2009Just as I was in the process of finishing my doctorate in August, I found out that my first first-author paper had been accepted for publication by The EMBO Journal. This was good news, because we were reporting some pretty fundamental findings in a relatively saturated field, and one of our competitors had managed to successfully stall the acceptance of this paper since March. Up until that point, witnessing this happen firsthand had been a somewhat frustrating and disillusioning experience for a young scientist, but I think that we were vindicated in the end. Anyway, this paper--and another…
emjohnson | October 18, 2009Grand evolutionary dramas about human origins capture our imagination and the stories provide context as to how we view ourselves. They are the scientific version of creation myths. However, unlike Adam and Eve being fashioned in the garden or humanity being vomited up by the giant Mbombo (as the Bakuba people of Congo believed), scientific origin stories are rigorously critiqued based on the best available evidence.
Friedrich Engels, a sociologist and future collaborator with Karl Marx, wrote one of the earliest scientific human origin tales in 1876. In his essay "The Part Played by…
bioephemera | October 18, 2009
Via Inventorspot: Hello Kitty goes anatomical, and we discover she even has bows on her guts. Yikes!
But seriously - the second, faux-ivory Hello Kitty looks a little familiar. According to Inventorspot,
you can choose from regular style or an interesting antiqued version with a finish resembling aged ivory. This style is meant to look like a netsuke; a polished and sculpted toggle worn by Japanese citizens and samurai on their kimono sashes from the 17th century on - robes have no pockets, y'see.
A netsuke? Sure. But to me, ivory + anatomy = anatomical teaching models like these. (see also…
oracknows | October 17, 2009I knew it! I knew there had to be an explanation that young earth creationists could come up with for all that evidence in support of evolution:
(WARNING: Borderline NSFW, depending on your job. Definitely offensive to fundamentalists.)
It's so obvious. Why didn't I think of it before?
bioephemera | October 17, 2009
NPS Photo/Dan Stahler
This fall, Montana opened a sport hunting season - on wolves. Yeah - the same wolves that wildlife biologists have been working so hard (and spending lots of federal money) to successfully reintroduce to restore the Yellowstone ecosystem. So what happened? It really isn't that surprising: hunters have already killed nine wolves in the wilderness area near Yellowstone's northern border - including both the radio-collared alpha and beta females of Yellowstone Park's Cottonwood wolf pack. Uh. . . oops.
And what do Montana authorities have to say about this?
"Members of…
jstemwedel | October 16, 2009The Free-Ride offspring try to explain what it means for an organism to be adapted to its environment, and why it matters:
Dr. Free-Ride: OK, so you've been learning in school about?
Younger offspring: Different adaptations.
Dr. Free-Ride: Can you explain what an adaptation is?
Younger offspring: Well, I forgot.
Dr. Free-Ride: You don't need to use the exact words from your science book.
Younger offspring: I know, but I still forgot the meaning.
Elder offspring: An adaptation is a change made to ensure success and survival in animals.
Younger offspring: I want to say it somewhat like my…
bioephemera | October 15, 2009For all my microbiology/cell biology peeps, this could be a neat opportunity. ASCB has obtained a two-year stimulus grant from NIH to assemble an image library of the cell. According to Caroline Kane, project PI and professor emerita at UC-Berkeley (and a wonderful person/mentor),
"By visualizing the structure and dynamic behavior of a broad range of cells, scientists and clinicians will be better able to understand the nature of specific cells and cellular processes normal and abnormal. This will likely lead to new discoveries about diseases and drug targets in the future," Kane added. "I'm…
grrlscientist | October 14, 2009tags: animals, hummingbirds, insects, biology, streaming video
This is a lesson in observation. This is a North American animal. I know what this is (and I knew as soon as I saw the still image on the video) but I am asking you: what is this; hummingbird or insect? And for a bonus, can you tell me the species?
This is a Common Clearwing, also known as the Hummingbird Clearwing Moth, Hemaris thysbe.
oracknows | October 14, 2009As I mentioned on Friday, I'm in Chicago right now attending the American College of Surgeons annual meeting, where I'll be until Wednesday afternoon, and may not be able to post anything new before Thursday afternoon or Friday. If there are any of my readers who happen to be surgeons attending the meeting, drop me a line and maybe we can get together. In the meantime, here's a blast from the past from the past. This post first reared its ugly head almost exactly three years ago; so if you haven't been reading at least three years, it's new to you.
It seems like only yesterday that I was…
bioephemera | October 14, 2009
Kantor Set
Kevin Van Aelst
Several readers have suggested I blog about photographer Kevin Van Aelst in the past weeks. If you've missed out on his work, Kevin is the sort of artist who can portray cellular mitosis in the legendarily difficult medium of Krispy Kreme, or chromosomes in gummi worm, fingerprints in non-dairy creamer, or the Kantor Set in egg yolk. His work is clever, funny, and meticulous to a fault.
Circulatory System (Heart On Your Sleeve), 2009
Kevin Van Aelst
Here's what the artist has to say:
While the depictions of information--such as an EKG, fingerprint, map or…
grrlscientist | October 13, 2009tags: honeybee life cycle, natural history, insects, biology, streaming video
The life cycle of a honey bee is presented in this video as an example of complete metamorphosis, the development of an insect from egg to larva, then pupa, then adult. Moths, butterflies and wasps also develop with complete metamorphosis. Some aspects of beekeeping are also discussed in this video.
oracknows | October 13, 2009As I mentioned on Friday, I'm in Chicago right now attending the American College of Surgeons annual meeting, where I'll be until Wednesday afternoon. If there are any of my readers who happen to be surgeons attending the meeting, drop me a line and maybe we can get together. In the meantime, here's a blast from the past from the past. This post first reared its ugly head almost exactly three years ago; so if you haven't been reading at least three years, it's new to you.
Alright, I'll come right out and admit it up front. There was no part one to this piece. Well, there was, but it wasn't on…
emjohnson | October 13, 2009In my earlier post I discussed the "Grandmother Hypothesis" as an explanation for human reproductive senescence, or menopause. A problem arises in understanding why women forgo one-third (and sometimes as much as one-half) of their reproductive lives, a condition unique in the natural world. Could this just be a neutral mutation, an artifact of longer human lives, or might it be a product of natural selection? If the latter, what selection pressure(s) could result in this unique human adaptation? The grandmother hypothesis posits that women who stopped ovulating in their golden years were…
ejohnson | October 13, 2009Women's taste in men varies naturally with their menstrual cycle--during the more fertile period, they are more drawn to a square jawline, heavy brow, facial symmetry, and other signs of masculinity. But a new study by a team of British biologists shows that women taking birth control are not subject to the same cyclical preferences; because the hormones in the birth controll pill essentially trick the body into believing it is pregnant, women taking the pill consistently favor men with less masculine features, who in terms of evolutionary history tend to make more loyal and supportive long-…
aardvarchaeology | October 12, 2009I lost the battle against the wasp nest: no matter how many workers I vacuumed, it still hung on. And now our house is full of groggy young queen wasps. It seems that the last thing a wasp nest does before shutting down for good is discharge a bunch of queens who will hibernate and then start new nests come spring. But these queens are racing into a trap.
The nest has two main exits. One out into the chilly open air. The other into the comfy warmth of the Rundkvist household. And we haven't been able to locate and stop up the latter opening. So when one of these young ladies is set to leave…
emjohnson | October 12, 2009Whether they're referred to as hot flashes, power surges or personal summers, the experience of menopause is not fun. But could it be the result of human evolution?
One of the most fascinating areas of research in evolutionary studies is the question of reproductive senescence. Why do women go through menopause? Chimpanzees and bonobos, our closest evolutionary relatives who we share 99% of our DNA with, are reproductive throughout their lifespans but human women can spend the last third of their lives infertile. Why?
Biologist Virpi Lummaa, whose recent work on evolutionary theory and birth…
oracknows | October 11, 2009I may have been a bit hard on Richard Dawkins lately, but, if he believed in saints, Dawkins would deserve sainthood for keeping his cool in the face of so much concentrated idiocy coming from Bill O'Reilly:
A couple of lovely O'Reilly quotes:
"I'm throwing in with Jesus because you guys can't tell us how it all got here?"
"When you guys figure it out, then come back to me."
Then, of course, O'Reilly couldn't resist pulling out the "fascism" gambit.
Geez, I don't think I could have restrained myself as well as Richard Dawkins did with Bill O'Reilly. In the face of such blustery nonsense,…