The same lipid that helps algae swim toward the light also appears to enable one type of brain cell to keep cerebrospinal fluid moving, researchers report. ... Read more »
Kong, J., Hardin, K., Dinkins, M., Wang, G., He, Q., Mujadzic, T., Zhu, G., Bielawski, J., Spassieva, S., & Bieberich, E. (2015) Regulation of Chlamydomonas flagella and ependymal cell motile cilia by ceramide-mediated translocation of GSK3. Molecular Biology of the Cell. DOI: 10.1091/mbc.E15-06-0371
Fast food companies advertise children’s meals on TV with ads that feature toy premiums, and it has been suggested that the use of these toy premiums may prompt children to request eating at fast food restaurants. In a new study, researchers found that the more children watched television channels that aired ads for children’s fast food meals, the more frequently their families visited those fast food restaurants.... Read more »
Emond, J., Bernhardt, A., Gilbert-Diamond, D., Li, Z., & Sargent, J. (2015) Commercial Television Exposure, Fast Food Toy Collecting, and Family Visits to Fast Food Restaurants among Families Living in Rural Communities. The Journal of Pediatrics. DOI: 10.1016/j.jpeds.2015.09.063
It’s Halloween, a day when it’s socially acceptable for adults to play dress-up like children. Also, people celebrate things that are spooky-scary. So it’s perfect timing that NASA would announce that our planet will be visited by a dead comet, a celestial ghost hoping to haunt a planet full of the living. As NASA pointed out in […]... Read more »
Kimbel WH, White TD, & Johanson DC. (1984) Cranial morphology of Australopithecus afarensis: a comparative study based on a composite reconstruction of the adult skull. American Journal of Physical Anthropology, 64(4), 337-88. PMID: 6435455
Kimbel, W., Johanson, D., & Coppens, Y. (1982) Pliocene hominid cranial remains from the Hadar formation, Ethiopia. American Journal of Physical Anthropology, 57(4), 453-499. DOI: 10.1002/ajpa.1330570404
We’re learning about the divergence between robust Australopithecus and early Homo 2.5-ish million years ago in my Human Evolution class this week. Because of this multiplicity of contemporaneous species, when scientists find new hominin fossils in Early Pleistocene sites, a preliminary question is, “What species is it?” To help my students learn how we know whether […]... Read more »
Leakey MG, Spoor F, Dean MC, Feibel CS, Antón SC, Kiarie C, & Leakey LN. (2012) New fossils from Koobi Fora in northern Kenya confirm taxonomic diversity in early Homo. Nature, 488(7410), 201-4. PMID: 22874966
Despite rhetoric that pits “anti-vaxxers” versus “pro-vaxxers,” most new parents probably qualify as vaccine-neutral–that is, they passively accept rather than actively demand vaccination. Unless there is an active threat of polio or whooping cough, they have to remind themselves that injecting their crying infant with disease antigens is a good thing.... Read more »
Miton, & Mercier. (2015) Cognitive Obstacles to Pro-Vaccination Beliefs. Trends in Cognitive Sciences. info:/http://dx.doi.org/10.1016/j.tics.2015.08.007
Earlier this year, we looked at a study that suggested sexting can be healthy in a relationship, but that study primarily looked at non-married couples and the average age for the behavior was, as you may expect, young adult. Which may lead you to think that married couples don’t sext. In fact, married couples do report sexting, but it is much less common than in young adult relationships and consists more of intimate talk with their partners than sending nude or nearly nude photos via mobile phones, according to a new study.... Read more »
McDaniel, B., & Drouin, M. (2015) Sexting Among Married Couples: Who Is Doing It, and Are They More Satisfied?. Cyberpsychology, Behavior, and Social Networking. DOI: 10.1089/cyber.2015.0334
by Rahel Cramer in Language on the Move
The Volkswagen (VW) emissions scandal has received significant media coverage in and outside of Germany. Besides accounts of the developments that led to the discovery of Volkswagen’s unethical behaviour, the immediate impacts on the company’s finances, CEO Martin Winterkorn’s resignation … Continue reading →... Read more »
When you think parasites you probably don’t think of anything helpful. However, this isn’t the case and certain parasites inadvertently help the host by helping themselves. In fact, researchers have discovered how intestinal worm infections cross-talk with gut bacteria to help the immune system.... Read more »
Zaiss MM,, Rapin A,, Lebon L,, Kumar Dubey L,, Mosconi I,, Sarter L,, Piersigilli A,, Menin L,, Walker AW,, Rougemont J,.... (2015) The intestinal microbiota contributes to the ability of helminths to modulate allergic inflammation. Immunity. info:/
Last week, I introduced my Human Evolution students to the “robust” australopithecines. It was a very delicate time, when we had to have a grown up, mature conversation about adult things. I reminded the students that they’re only human, but they must resist urges that seem only natural. No matter how much they want to, even if their friends are doing it, […]... Read more »
Asfaw B, White T, Lovejoy O, Latimer B, Simpson S, & Suwa G. (1999) Australopithecus garhi: a new species of early hominid from Ethiopia. Science (New York, N.Y.), 284(5414), 629-35. PMID: 10213683
Domínguez-Rodrigo, M., Pickering, T., Baquedano, E., Mabulla, A., Mark, D., Musiba, C., Bunn, H., Uribelarrea, D., Smith, V., Diez-Martin, F.... (2013) First Partial Skeleton of a 1.34-Million-Year-Old Paranthropus boisei from Bed II, Olduvai Gorge, Tanzania. PLoS ONE, 8(12). DOI: 10.1371/journal.pone.0080347
Haile-Selassie Y, Gibert L, Melillo SM, Ryan TM, Alene M, Deino A, Levin NE, Scott G, & Saylor BZ. (2015) New species from Ethiopia further expands Middle Pliocene hominin diversity. Nature, 521(7553), 483-8. PMID: 26017448
Walker, A., Leakey, R., Harris, J., & Brown, F. (1986) 2.5-Myr Australopithecus boisei from west of Lake Turkana, Kenya. Nature, 322(6079), 517-522. DOI: 10.1038/322517a0
Can the Salem Witches of 1692 be explained by a fungus?... Read more »
DNA from Bronze Age skeletons shows that the plague is truly an ancient disease, and was endemic across Eurasia at least 3,000 years earlier than previously thought.... Read more »
Simon Rasmussen, Morten Erik Allentoft, Kasper Nielsen, Ludovic Orlando, Martin Sikora, Karl-Göran Sjögren, Anders Gorm Pedersen, Mikkel Schubert, Alex Van Dam, Christian Moliin Outzen Kapel.... (2015) Early Divergent Strains of Yersinia pestis in Eurasia 5,000 Years Ago. Cell, 163(3). info:/http://dx.doi.org/10.1016/j.cell.2015.10.009
Biologists discovered that bacteria–often viewed as lowly, solitary creatures–are actually quite sophisticated in their social interactions and communicate with one another through similar electrical signaling mechanisms as neurons in the human brain. In the study, scientists detail the manner by which bacteria living in communities communicate with one another electrically through proteins called “ion channels.”... Read more »
Prindle, A., Liu, J., Asally, M., Ly, S., Garcia-Ojalvo, J., & Süel, G. (2015) Ion channels enable electrical communication in bacterial communities. Nature. DOI: 10.1038/nature15709
Regardless of how many articles I read on scurvy, or how many skeletons I’ve seen showing evidence of the deficiency of vitamin C, or how many times I’m reminding that […]... Read more »
Krenz-Niedbała, M. (2015) Did Children in Medieval and Post-medieval Poland Suffer from Scurvy? Examination of the Skeletal Evidence. International Journal of Osteoarchaeology. DOI: 10.1002/oa.2454
Dealing what they say is a “mortal blow” to the interpretation of some creationists, a team of archaeologists has concluded that a panel of rock art in Utah portrays all manner of fantastic figures, but it does not, in fact, depict a pterosaur.
... Read more »
In essence, isotopes are different varieties of the same kind of element. Their atoms have the same number of protons but variable numbers of neutrons, meaning that they differ from each other in terms of their atomic weight.
For example, carbon-12, carbon-13 and carbon-14 are all isotopes of carbon. The numeric modifier reflects the differing weights of each isotope. Every atom of these isotopes contains 6 protons and then 6 (12C), 7 (13C), or 8 (14C) neutrons respectively.... Read more »
Neuroscientists have mapped how the human brain experiences gratitude with help from an unexpected resource: Holocaust survivors’ testimonies. “In the midst of this awful tragedy, there were many acts of bravery and life-saving aid,” said lead author Glenn Fox, a post-doctoral researcher at the Brain and Creativity Institute at USC who led the study. “With […]... Read more »
It's tempting to believe that people these days aren't getting enough sleep, living as we do in our well-lit houses with TVs blaring, cell phones buzzing, and a well-used coffee maker in every kitchen. But new evidence reported in the Cell Press journal Current Biology on October 15 shows that three ancient groups of hunter-gatherers--living in different parts of the world without any of those trappings of modern life--don't get any more sleep than we do.... Read more »
Yetish et al. (2015) Natural Sleep and Its Seasonal Variations in Three Pre-industrial Societies. Current Biology. info:/http://dx.doi.org/10.1016/j.cub.2015.09.046
The big news today was that a man in California set fire to an aisle of Halloween costumes in a Walmart. Honestly, this shouldn’t be the biggest news story of […]... Read more »
de Becdelievre, C., Thiol, S., Santos, F., & Rottier, S. (2015) From fire-induced alterations on human bones to the original circumstances of the fire: An integrated approach of human cremains drawn from a Neolithic collective burial. Journal of Archaeological Science: Reports, 210-225. DOI: 10.1016/j.jasrep.2015.08.030
Why some people live much longer than others is an enduring mystery. Now, based on a study of a worm, scientists are getting one step closer to understanding longevity. They report that the metabolic profiles of the worms could accurately predict how long they would live and that middle age could be a key turning point.... Read more »
Sarah K. Davies, Jacob G. Bundy, & Armand M. Leroi. (2015) Metabolic Youth in Middle Age: Predicting Aging in Caenorhabditis elegans Using Metabolomics. Journal of proteome research. info:/10.1021/acs.jproteome.5b00442
"It's empathy that makes us help other people. It's empathy that makes us moral." The economist Paul Zak casually makes this comment in his widely watched TED talk about the hormone oxytocin, which he dubs the "moral molecule". Zak quotes a number of behavioral studies to support his claim that oxytocin increases empathy and trust, which in turn increases moral behavior. If all humans regularly inhaled a few puffs of oxytocin through a nasal spray, we could become more compassionate and caring. It sounds too good to be true. And recent research now suggests that this overly simplistic view of oxytocin, empathy and morality is indeed too good to be true.... Read more »
De Dreu, C., Greer, L., Van Kleef, G., Shalvi, S., & Handgraaf, M. (2011) Oxytocin promotes human ethnocentrism. Proceedings of the National Academy of Sciences, 108(4), 1262-1266. DOI: 10.1073/pnas.1015316108
Xu X, Zuo X, Wang X, & Han S. (2009) Do you feel my pain? Racial group membership modulates empathic neural responses. The Journal of neuroscience : the official journal of the Society for Neuroscience, 29(26), 8525-9. PMID: 19571143
Do you write about peer-reviewed research in your blog? Use ResearchBlogging.org to make it easy for your readers — and others from around the world — to find your serious posts about academic research.
If you don't have a blog, you can still use our site to learn about fascinating developments in cutting-edge research from around the world.
Research Blogging is powered by SMG Technology.
To learn more, visit seedmediagroup.com.