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Bora Zivkovic

My scientific specialty is chronobiology (circadian rhythms and photoperiodism), with additional interests in comparative physiology, animal behavior and evolution. I am not an MD so I cannot diagnose and treat your sleep problems. As well as writing this blog, I am also the Online Discussion Expert for PLoS. This is a personal blog and opinions within it in no way reflect the policies of PLoS. You can contact me at: Coturnix@gmail.com

Posts by this author

May 16, 2008
Ha! Made you look! Which is exactly the point! Go and add your own ideas in the comments there....
May 16, 2008
...no idea what kind of Internet access I will have there, so I scheduled some re-posts and quotes to show up automatically. I'll add more if I can when I can.
May 16, 2008
I'd like to sail on this thing: Bay Area engineer Ugo Conti has sailed the world, but has always suffered from seasickness. A queasy stomach became his motivation to design "Proteus" - a spider-like sea craft made for smoother sailing. He designed the Wave Adaptive Modular Vessel to cross the ocean…
May 16, 2008
This kind of ignorant bleating makes me froth at the mouth every time - I guess it is because this is my own blogging "turf". One of the recurring themes of my blog is the disdain I have for people who equate sleep with laziness out of their Puritan core of understanding of the world, their "work…
May 16, 2008
First in a series of five posts on clocks in bacteria (from March 08, 2006)... As I stated in the introductory post on this topic, it was thought for a long time that prokaryotes were incapable of generating circadian rhythms. When it was discovered, in 1994 [1], that one group of prokaryotes,…
May 15, 2008
By the time a man notices that he is no longer young, his youth has long since left him. - W. Somerset Maugham
May 15, 2008
Monarch Butterflies Help Explain Why Parasites Harm Hosts: It's a paradox that has confounded evolutionary biologists since Charles Darwin published On the Origin of Species in 1859: Since parasites depend on their hosts for survival, why do they harm them? A new University of Georgia and Emory…
May 15, 2008
Sciencewoman is in Atlanta, judging this year's International Science and Engineering Fair and liveblogging the whole thing: Going to Atlanta.... First Taste of the International Science and Engineering Fair ISEF 2008: Nobel Laureates Panel ISEF 2008: Day 1 by the numbers ISEF 2008: Full disclosure…
May 15, 2008
My regular readers are probably aware that the topic of adolescent sleep and the issue of starting times of schools are some of my favourite subjects for a variety of reasons: I am a chronobiologist, I am an extreme "owl" (hence the name of this blog), I am a parent of developing extreme "owls", I…
May 15, 2008
I got an interesting e-mail yesterday: Columbia White Sale goes through May 31st. For more information, please visit: http://cup.columbia.edu/sale/23. We are offering up to 80% off on more than 1,000 titles in all subjects. (There are some really great deals). I hope this will be of interest to you…
May 15, 2008
The fifth annual Museum Night in Belgrade and other Serbian cities will be held this Saturday, May 17th: More than 130 museums and galleries in 23 towns in Serbia will be open just for you, so the only decision you have to make is to choose a good company. We hope you are in good shape because…
May 15, 2008
Social networking meets social conscience: As reported today in the science journal Nature, MalariaEngage.org aims to help in the stuggle against malaria. Rather than throwing buckets of money at big name Western research institutes, the new website aims to give smaller locally-based African…
May 15, 2008
I am kinda glad I went to Belgrade earlier and escaped the craziness of the EuroVision contest. The tickets have been sold out for a long time now. At least the European visitors will see how pretty Belgrade is now and how nicely it has recovered from a decade of wars, sanctions, hyperinflation,…
May 15, 2008
Neurotic Physiology Stitchin' Fish at the Ecology Action Centre A Reasonable Theory Scholarship 2.0: An Idea Whose Time Has Come What Sorts of People The Stanford Facebook Class Giovanna Di Sauro Wandering Primate Vetskeptics
May 15, 2008
I And The Bird #75 is up on Gallicissa Oekologie #16 is up on Science and Supermodels
May 15, 2008
The first in a series of posts on circadian clocks in microorganisms (from February 23, 2006)... Many papers in chronobiology state that circadian clocks are ubiqutous. That has been a mantra since at least 1960. This suggests that most or all organisms on Earth possess biological clocks. In the…
May 15, 2008
To sleep or not to sleep: the ecology of sleep in artificial organisms: We systematically varied input parameters related to the number of food and sleep sites, the degree to which food and sleep sites overlap, and the rate at which food patches were depleted. Our results reveal that: (1) the costs…
May 14, 2008
Life is so much more meaningful if you take the time to hunt down and strangle twits who post blather to inappropriate newsgroups. - Henry Spencer
May 14, 2008
Wild Three-Toed Sloths Sleep 6 Hours Less Per Day Than Captive Sloths, First Electrophysical Recording Shows: In the first experiment to record the electrophysiology of sleep in a wild animal, three-toed sloths carrying miniature electroencephalogram recorders slept 9.63 hours per day--6 hours less…
May 14, 2008
Tangled Bank #105 is up on The Beagle Project Blog Carnival of Education #171 is up on Instructify
May 14, 2008
The origin and early evolution of circadian clocks are far from clear. It is now widely believed that the clocks in cyanobacteria and the clocks in Eukarya evolved independently from each other. It is also possible that some Archaea possess clock - at least they have clock genes, thought to have…
May 13, 2008
I feel so agitated all the time, like a hamster in search of a wheel - Carrie Fisher
May 13, 2008
There are 57 articles this week in PLoS ONE - look around for yourself, these are my own picks: The Secret World of Shrimps: Polarisation Vision at Its Best: Animal vision spans a great range of complexity, with systems evolving to detect variations in light intensity, distribution, colour, and…
May 13, 2008
This one is for Rob, one of those strange-metered (7/8, or 1-2-3;1-2;1-2/1-2-3;1-2;1-2/...) Macedonian songs of old: There are many more like this in the menu there on YouTube....
May 13, 2008
College Student Sleep Patterns Could Be Detrimental: A Central Michigan University study has determined that many college students have sleep patterns that could have detrimental effects on their daily performance. When Following The Leader Can Lead Into The Jaws Of Death: For animals that live in…
May 13, 2008
Grand Rounds 4:34 are up on Health Business Blog The 124th Carnival of Homeschooling is up on Mom Is Teaching
May 13, 2008
Peter Binfield, the new Managing Editor of PLoS ONE, did some analysis of the content of the journal so far, and realized that the single most frequent Category our authors use is 'Cell Signaling'. And, as he writes in his blog post, those are some impressive papers....and we want more of them!
May 13, 2008
One of the latest additions (just two days ago, I think) to the Directory of Open Access Journals is a journal that will be of interest to some of my readers - The Open Sleep Journal. The first volume has been published and contains several interesting articles. One that drew my attention is The…
May 13, 2008
Much of the biological research is done in a handful of model organisms. Important studies in organisms that can help us better understand the evolutionary relationships on a large scale tend to be hidden far away from the limelight of press releases and big journals. Here's one example (March…
May 12, 2008
Comedy is tragedy plus time. - Carol Burnett