evolution
pharyngula | August 11, 2010If you're more bored than I am (and I'm not bored at all — I'm neck deep in work), try out these evolution games on the web. Any good? Useful for the kiddies? I don't know. Somebody else review them for me.
sa smith | August 3, 2010FINALLY!
A free paper that explains the basics of viral quasispecies!!! YAAAAAY!!!
Quasispecies Theory and the Behavior of RNA Viruses
ARG! I have been wanting a paper like this to come out for AGES! I dont back down from explaining complex topics to you guys, but 'quasispecies' is just so weird...
I am going to reference this thing all the time now!
Eeeeeeeeeeeeeee!!!! Survival of the flattest!
**HAPPY-DANCE**
cagapakis | July 30, 2010
I have a very weak constitution. It doesn't take much time on a moving vehicle of any type to make be barf, and I've hurled all over gorgeous coastal areas in tourist destinations around the world. There was that one time in Italy, snapping photos of the incredible shoreline caves (now dubbed barf grottos), that one time scuba diving in Belize (after I had made it to the surface, thankfully), and in lobby trashcans of various finally stationary destinations (the video is of me, my sister, and my fiancé inadvisedly spinning around while at an archeological site in Greece earlier this summer…
gregladen | July 28, 2010
The Triassic is old. This book is new. That is a hard to beat combination.
Let's see ... The Triassic is about here:
(You can also look it up in this PDF file supplied by the USGS.
It is situated between two major extinction events, and is especially interesting because it is during this period that modern day ecological systems and major animal groups took a recognizable form. The preceding Permian, if contrasted with modern day, would form a very stark contrast while the Triassic would be at least somewhat more recognizable.
But of course the Triassic was in many ways distinct,…
sa smith | July 26, 2010Human beta globin has held a special place in my heart due to its rather prominent role in the Evolution-Creation 'debate'. It just got a neat evolutionary upgrade :)
Humans have one kind of hemoglobin when they are infants which has a higher affinity for O2 (alpha globin + gamma globin), because it makes it easier to steal O2 from their mom. Once the babies are out in the real world for a few months, they slowly but steadily shift from making the gamma globin to beta globin, the adult hemoglobin (alpha globin + beta globin).
This transition is a problem for kids with sickle-cell. Their…
pharyngula | July 24, 2010
Most of you don't understand evolution. I mean this in the most charitable way; there's a common conceptual model of how evolution occurs that I find everywhere, and that I particularly find common among bright young students who are just getting enthusiastic about biology. Let me give you the Standard Story, the one that I get all the time from supporters of biology.
Evolution proceeds by mutation and selection. A novel mutation occurs in a gene that gives the individual inheriting it an advantage, and that person passes it on to their children who also gets the advantage and do better than…
pharyngula | July 22, 2010
I'm one of those dreadful animal-centric zoologically inclined biologists. Plants? What are those? Fungi? They're related to metazoans somehow. Lichens? Not even on the radar. The first step in fixing a problem, though, is recognizing that you have one. So I confess to you, O Readers, that my name is PZ, and I am a metazoaphile. But I can get better.
My path to opening up to wider horizons is to focus on what I find most interesting about animals, and that is that they are networks of cells driven by networks of genes that generate patterned responses of expression by cell signaling, or…
mikethemadbiologist | July 22, 2010
In a good post about puppy mills, Amanda Marcotte made a good point about domesticated versus undomesticated pets (italics mine):
This would probably mean that people couldn't get exotic pets, and that isn't really the sort of thing that would keep me up at night, either. I understand the urge to have something like a pet ferret, but like with smoking, it's an understandable urge that probably is best not indulged. Cats and dogs evolved to be our pets and want nothing more than to be our pets, thus they are the best choices for pets. They may not love every second of being a pet---going…
grrlscientist | July 18, 2010tags: Birdbooker Report, bird books, animal books, natural history books, ecology books
Books to the ceiling,
Books to the sky,
My pile of books is a mile high.
How I love them! How I need them!
I'll have a long beard by the time I read them.
~ Arnold Lobel [1933-1987] author of many popular children's books.
The Birdbooker Report is a special weekly report of a wide variety of science, nature, environment and behavior books and field guides that currently are, or soon will be available for purchase. This report is written by one of my Seattle birding pals and book collector, Ian "…
pharyngula | July 16, 2010Larry Arnhart wrote a strange article in which he tried to claim Darwin and evolution for libertarianism, or as they prefer to call it nowadays, "Classical liberalism". I was invited to give a reply, along with a few other people, but I can give the gist of my reaction here: no one gets to claim a biological justification for their political philosophy. Evolution does not endorse libertarianism, socialism, communism, or capitalism, and even if it did nudge one way or the other, that does not mean that we shouldn't oppose the brutal short-term expediency of natural processes.
grrlscientist | July 15, 2010tags: When Ideas Have Sex, imagination, innovation, group intelligence, exchange of ideas, cumulative ideas, evolution, sexual reproduction, technological specialization, free trade, Matt Ridley, TEDTalks, TED Talks, streaming video
At TEDGlobal 2010, author Matt Ridley shows how, throughout history, the engine of human progress has been the meeting and mating of ideas to make new ideas. It's not important how clever individuals are, he says; what really matters is how smart the collective brain is.
TEDTalks is a daily video podcast of the best talks and performances from the TED Conference…
jrosenhouse | July 13, 2010Jerry Coyne has a post up reporting on new polling data on science and religion coming out of Virginia Commonwealth University. Jerry notes that the numbers for the evolution questions are broadly consistent with what past surveys have found. I mostly agree, but there was one number that jumped out at me. Here was the question:
Which of these statements comes closest to your views on the origin of biological life: biological life developed over time from simple substances, but God guided this process, biological life developed over time from simple substances but God did not guide this…
grrlscientist | July 11, 2010tags: Birdbooker Report, bird books, animal books, natural history books, ecology books
Books to the ceiling,
Books to the sky,
My pile of books is a mile high.
How I love them! How I need them!
I'll have a long beard by the time I read them.
~ Arnold Lobel [1933-1987] author of many popular children's books.
The Birdbooker Report is a special weekly report of a wide variety of science, nature, environment and behavior books and field guides that currently are, or soon will be available for purchase. This report is written by one of my Seattle birding pals and book collector, Ian "…
gregladen | July 10, 2010One of those really cool and useful "evolution stories" gets verified and illuminated by actual research. And blogging!
An oystercatcher is a wading bird of the family Haematopodidae, distributed in one genus, Haematopus. As is the case with many coast loving birds, there has been confusion about the limits of the 11 or so species known to exist worldwide. That itself is an interesting story (Hocke 1996), but one we will not go into now.
Adult coastal oystercatchers (some species are not coastal) eat all sorts of animals found in the intertidal zone, including shellfish of all sorts,…
oracknows | July 8, 2010I've been a critic of Arianna Huffington's massive group blog, The Huffington Post, since three weeks after it first blighted the blogosphere. That's when I first noticed that the "health" section (such as it is) of HuffPo had already become a wretched hive of scum and anti-vaccine quackery, something I began documenting again and again and again and again and again over five years ago, before Salon.com and Rolling Stone flushed their credibility right down the crapper with Robert F. Kennedy's infamous conspiracy mongering about thimerosal in vaccines. Indeed, I continue to document the…
sa smith | July 8, 2010One of the scary things about filoviruses (eg Ebola, Marburg)... is that we dont know where they comes from. We know how polio is transmitted. We know how HIV-1 is transmitted. We know how influenza is transmitted. We know how rabies is transmitted.
Even if you dont have good vaccines or good therapies, if you know where a virus comes from or how it is transmitted, you can take steps to prevent illness.
But filoviruses....?
One hypothesis is that small mammals are the natural reservoir. A way to look for that would be to study the immunology of lots of small mammals-- Do they have…
mikethemadbiologist | July 7, 2010Chris Mooney is encouraging people to read the longer paper on which his Washington Post op-ed piece was based (some of my thoughts on the op-ed are here). So I did.
My short take: there's some good, mixed in with some bad. I'll behave unusually and describe the good first.
The powerful influence of politics and ideology is underscored by a rather shocking survey result: Republicans who are college graduates are considerably less likely to accept the scientific consensus on climate change than those who have received less education. These better-educated Republicans could hardly be said to…
emjohnson | July 6, 2010At ScienceBlogs we value our independence. Just consider the recent posts over the laughable PepsiCo nutrition blog to see how seriously people take this. But one thing that would never happen is for anything we write to be edited without our consent.
As I wrote yesterday, I am disappointed in the Huffington Post's decision to grant a public stage to David Klinghoffer, Senior Fellow at the intelligent design "think tank" known as the Discovery Institute. DI is a self-avowed propaganda vehicle seeking to "wedge" religion into public schools. Once HuffPo handed him the megaphone…
emjohnson | July 6, 2010My response to David Klinghoffer's piece in the Huffington Post has just been published:
Creationists are fond of laying the blame for Nazi eugenics on Charles Darwin. They insist that his materialist argument that humans evolved from animals and his conception of natural selection inspired the Nazis to implement a widespread policy of artificial selection within the Fatherland. However, these claims are as baseless as was the so-called "science" that the Nazis employed.
The latest example of this ignorance disguised as revelation was recently published on The Huffington Post by a Senior…
emjohnson | July 6, 2010Image: via PZ Myers
PZ Myers has a new post condemning Discovery Institute ideologue David Klinghoffer's recent post connecting Darwin to the eugenic policies of Hitler. He trots out some of the same points that have been refuted time and again.
Darwin elaborated a picture of how the world works, how creatures war with each other for survival thus selecting out the fittest specimens and advancing the species. In this portrait of animal life, man is no exception. Any animal that strives to preserve the weak, as man does, is committing racial suicide. "Thus the weak members of civilized…