Showing posts with label education. Show all posts
Showing posts with label education. Show all posts

Thursday, February 12, 2009

Two Centuries Ago...

Once in a while, maybe not quite once a century, a person will come along who will have the Next Big Idea, who will shape the course of history. A person that can change the way people think, and can in fact still affect our ideas today.

Oddly enough, on this day in 1809, two people were born on opposite sides of the Atlantic Ocean who would come to shape their century. One, of course, was our sixteenth president, Abraham Lincoln.

The other was Charles Darwin.

Happy birthday, Charles Darwin!

This year is not only the bicentennial of Darwin's birth. He published The Origin of Species at the age of fifty, which makes this year the 150th anniversary of its publication, as well. So as you might imagine, this is a jubilee year for evolutionary biologists. There are conferences going on all month, commemorative articles, magazines and journals, and other fun and celebration. Check out the Darwin Day official website to learn more about what's going on this month and all year!

Celebrating Darwin Day is nothing new; scientists were celebrating him by 1909. This year, of course, is a Big Round Number year, so there are more things going on than usual. Have a very happy Darwin Day!

For your reading pleasure:




Thursday, October 30, 2008

Sarah Palin Loses the Geneticist Vote

This is already burning up in the science-oriented part of the blogosphere, but I want to mention it here too.

I've talked before about how Sarah Palin is a heartless lawbreaker who would love to shoot every wolf in Alaska. But did you know she's also opposed to basic scientific research?

Well, more specifically, she doesn't know what she's talking about when it comes to research. Otherwise, why would she highlight spending on fruit fly research in Paris as a "pet project earmark"? Did no one in the McCain campaign bother to find out what kind of research they were doing? I hate to tell you this, Ms. Palin... but fruit flies are the favored lab animal for genetics research around the world, both in Paris and here in the good ol' USA. (Except for New Jersey, which is not part of the "real" America.)

I think PZ Meyers, who writes the excellent blog Pharyngula, said it best:

Yes, scientists work on fruit flies. Some of the most powerful tools in genetics and molecular biology are available in fruit flies, and these are animals that are particularly amenable to experimentation. Molecular genetics has revealed that humans share key molecules, the basic developmental toolkit, with all other animals, thanks to our shared evolutionary heritage (something else the wackaloon from Wasilla denies), and that we can use these other organisms to probe the fundamental mechanisms that underlie core processes in the formation of the nervous system — precisely the phenomena Palin claims are so important
.

Oh, and he also threw in this disturbing but excellent point:

You damn well better believe that there is research going on in animal models — what does she expect, that scientists should mutagenize human mothers and chop up baby brains for this work?


If you're interested in watching, Think Progress has a video clip of Palin delivering the remarks. You can read the original prepared text at the McCain campaign page, but they differ somewhat from what she actually said. (For example, sarcasm is not noted anywhere in the prepared text.)

With the election so near (I've been unable to think of anything else lately), I think it's important to recognize what a McCain victory would do to the scientific community. Government funding for basic research is non-negotiable.

Tuesday, October 14, 2008

Dinosaur Documentary Drinking Game

Last night, D. and I watched a Nova episode about Arctic dinosaurs. (You can view the whole episode online!)

D. is a remarkable and patient man, for I know few people other than him who could tolerate watching a TV show about dinosaurs with me. I am incredibly annoying. I have a tendency to argue with the television, pause the show to make a comment about what I feel is wrong with the most recent shot, and so on. I do this a lot with science shows in general, but dinosaur shows for whatever reason have a greater likelihood of skewing towards hyperbole. (That, and I don't know enough about astrophysics or material science to keep up my end of the argument.)

I guess I must have paused the action one too many times (is three times in the first ten minutes a lot?), because D. turned to me and said, "You know, we should create a dinosaur show drinking game."

Voilá. We took notes during the show and added a few other things based on previous things we've watched. (Walking with Dinosaurs, etc.)
  • Drink for tired clichés -- "gentle giant", "vicious carnivore" etc. -- that make assertions about an animal's temperament based solely on what it eats. (Cape buffalo and hippos are herbivores, but no one would call them gentle!)
  • Drink for scientific inaccuracy, like showing T. rex urinating on its territory. (Feel free to call me if you aren't sure. Here are a few to start you off.)
  • Drink for Jack Horner. (Jack Horner is awesome!)
  • Drink every time they show a digital animation of an asteroid hitting the earth at the end of the Cretaceous. Drink twice if the ensuing explosion is reflected in the eye of a dinosaur.
  • Drink for Montana.
  • If anyone says "Brontosaurus," (including the narrator!) finish your drink.
  • Drink each time a prehistoric critter breaks the fourth wall (bumps the camera, etc.) -- prevalent in the "Walking with..." series.
  • Drink for paleontologists in cowboy hats. (One drink per hat.)
  • Drink for dinosaur-on-dinosaur violence or dinosaur mating.
  • When a female paleontologist or other scientist appears, finish your drink. (Don't worry, guaranteed not to happen more than once per show. The Wikipedia page for Sue is longer than the page for the woman who discovered her. These are very male-dominated shows.)
Grab a couple of beers and your TV Guide -- there's always something about dinosaurs to watch, whether on Discovery Channel, PBS, National Geographic or Animal Planet.

In the end, though, as critical as I am of these shows, I have a deep affection for them. Perhaps its the part of me that hasn't stopped hoping to see a real, living dinosaur someday, or maybe I'm just a nature nerd. I couldn't tell you which. But check out the Arctic dinosaur show, it was actually quite interesting. Bring a beer over to your computer while you're at it. Keep an eye out for cowboy hats.

PS: Forgot to mention -- if you have anything to add to this list, please leave a comment!

Wednesday, August 27, 2008

Too Cool

So, it turns out that I'm rather allergic to certain moisturizers, or some ingredient therein.

In addition to some serious topical steroid cream which required a prescription, my dermatologist suggested a lotion called Sarna* as an additional treatment/source of salvation. (A salve of salvation?) What's the magic ingredient? There are two, actually: camphor and menthol.
Camphor

Naturally-derived camphor is a tree resin that is solid at room temperature. It is also highly flammable, which I learned from The Time Machine. Not surprisingly, it has some insect-repellent qualities (of course it does, plants need defenses too!). Some mothballs are made with camphor. It is also a rather effective topical analgesic.

It is interesting to note that natural camphor is derived from the camphor laurel, Cinnamomum camphora. That genus name isn't a coincidence; true cinnamon (C. verum) and cassia (C. aromaticum, which is most common "cinammon" sold in America) are in the same genus as camphor. Camphor laurels are an economically important crop in the areas where the species is native, but the tree is invasive in Australia. Camphor was also one of the first organic chemicals to be synthesized in a laboratory.

Menthol

Menthol is the other half of this dynamic duo. Menthol can also be synthesized in the lab, but in nature it is found in members of Mentha, the genus that includes peppermint (Mentha x piperita, actually a well-established hybrid of watermint and spearmint), spearmint (Mentha spicata), and other pleasant-smelling herbs.

I don't know which of these compounds acts faster and which one lasts longer, but combined they're enough to stop itching cold. (Sorry.) Menthol stimulates specific cold-sensitive ion channels in skin neurons, but I'm not sure how camphor works. In my case, the combination of menthol and camphor creates such a strong illusion of cold that I start shivering even though I know my body is at an acceptable room temperature.

I would write more -- allergies are incredibly interesting and very complicated -- but I'm also taking diphenhydramine and I feel like I'm about to zonk out. (And it's only 11 AM!) I'd better prepare some coffee.
Caffeine

Oh, organic chemistry, is there anything you can't do?

*As an interesting aside, sarna apparently means "scabies" in Spanish.

Thursday, August 14, 2008

Anax junius and Friends

As promised, some pictures!

It turns out that Anax junius likes to hang out more towards the middle of the pond. Lacking waders, I practiced catching anything I could. (Things like coordination don't always come easily to me.) I also don't have a great camera for macro stuff. One of these days I'll get a better one, but in the meantime I still got some decent pics!

OK, less talking, more dragons!

Pachydiplax longipennis

First up is Pachydiplax longipennis, also known as the blue dasher. That is the standard way of holding dragonflies after you catch them, by the way. This guy was a lot more blue than the picture looks, but it's sort of hard to see.

Celithemis eponina

If this is what I think it is (but I don't have a great field guide) then it is the aptly-named brown-spotted yellow-wing, Celithemis eponina. Unfortunately, standard dragonfly holding procedure obscures a lot of the beautiful wing patterning, so check out Wikipedia for more. The wings on these guys are lovely! If I've ID'd it correctly, it's also known as the Halloween pennant. Even if I don't have the species quite right, I feel pretty good saying that it's at least in Celithemis.

Libellula vibrans?
Libellula incesta

I don't have a good handle on this one. I suspect it might be Libellula vibrans, the great blue skimmer, but I'm really not sure. There's a picture of one on this page about the genus Libellula, but ... I don't know. I'll have to send this post to Mike and ask him.

(Editor's note: See next post for correction.)

Plathemis lydia

I'm pretty sure this one is a white-tail, Plathemis lydia. Why? The tail is white. (Actually, there may be several species of white-tails, but there is only one in my field guide. Hopefully the correct one. )

And, finally, the pièce de résistance, the trophy at the end of several hot hours standing in the sun by a mucky pond with a net, the big kahuna we were hunting all day:


Mike holding our first and only Anax junius of the second day out.


Waiting for the glue on the transmitter to dry.

Waiting for clearance from air traffic control.

After being manhandled for several minutes, they need to shiver their flight muscles to get warm enough to take off. Payload firmly attached, he was airborne a few seconds after this pictures.

We tracked him for about an hour with a pretty strong signal, first up in the woods and the back to the pond area where Mike had originally caught him. And then, suddenly, the signal vanished. We waited awhile, but he did not return. Perhaps he decided that this pond was too dangerous.

PS: You might be interested to know, for scale, that my left thumb nail, which features prominently in all but the pictures of Anax, is almost exactly one-half inch wide. You might also be interested to know that "longipennis" means "long-winged", despite what I know you were thinking. Apparently penna means "feather" in Latin and is related to the word "pennant". Penna is also the root of the word "pinion", meaning both the outer part of a bird's wing and the removal thereof to permanently prevent flight. Aren't you glad you asked? Entomology and etymology, all in one convenient location.

Sunday, August 3, 2008

Applebee's, Meat, and the Dearborn Independent

Today D. and I went to the local Applebee's for a quick bite after doing some shopping at Target. We don't eat there often, but it was close by and we figured it would be fast and easy, and it was.

While we were waiting for the check, I idly surveyed the sports memorabilia decor. Jets jerseys sharing a wall with Giants jerseys, an assortment of hockey team photos, and along one wall, a number of humorous golf-related signs.

And then my eyes fell on something unusual on the wall of golf items. For there, between the sign indicating that hitting your caddies with a five iron is more effective than with a driver (or something like that, it seemed very violent either way) and something else about golf being outlawed in fifteenth-century England, there was a little framed magazine cover showing a man in classic golf pose, having just driven the ball 200 yards and looking very satisfied.

It was a cover from the Dearborn Independent.

Had I been in this Applebee's a year ago, I might not have even made any association, although the name was certainly familiar. However, over the last couple of months D. and I have been watching The Jewish Americans, a great documentary that aired in three 140-minute segments on PBS. It's really good so far, although I haven't yet wanted to watch the next segment. Learning about Jews in the Old West is one thing, but we're just about up to World War II and that's a little harder.

In the meantime, though, we have learned a lot about Henry Ford and the newspaper he purchased that published some genuinely bonkers anti-Semitism. Among other things, it ran the Protocols of the Elders of Zion.

The Dearborn Independent was founded in 1901 and purchased by Henry Ford in 1919; it didn't publish again after 1927, after lawsuits about above-mentioned bonkers anti-Semitism forced him to shut it down. The cover in the restaurant was dated 1926, putting it squarely within his era.

I'm not calling for some kind of mass action against Applebee's; restaurant chains have enough going on right now with the economy doing what it's doing. But it did get me thinking. I had actually been planning to email the company anyway; the menu is dreadfully dead-animal centric, although, as our waitress helpfully pointed out since it wasn't on the menu, they do serve vegan burgers. I think I will mention the magazine cover in my email as well. I know that their intention was not to offend; I'm sure it's only up on the wall because it fit the golf theme of that section. But I do think it's worth reconsidering whether it should be up there at all.

What do you think?

Wednesday, July 9, 2008

Better Know an Insect: Femme Fatale Fireflies

Last night Dustin and I took an evening stroll through the park. It was a lovely, warm evening, with robins singing from the treetops and a slight breeze rustling the grass. And, of course, there were fireflies, lighting up the summer night with their romantic display, a visual analog to a bird's song.

Males, seeking females, blink their message in code, while females sit and wait on the ground for the right guy to come along. When she sees him, she blinks back until he finds her, and that's where baby fireflies come from. Aww.


Unless she's a hungry female of the genus Photuris, that is.

After Photuris females have mated, they don't need to mate again. But why waste a perfectly good signaling device? Instead, the Photuris females signal back to males of another species, Photinus, luring them in and catching them for dinner. Delicious!


But he's not just a tasty meal to help her lay eggs. It turns out that Photinus males produce a chemical that protects them from attacks by spiders and other arthropod predators. By eating Photinus males, the Photuris female acquires this armor and is herself protected from attack.

So, the next time you're out for an evening stroll in July, consider the drama playing out before you. There are dangerous femme fatales everywhere you look.

Read more about it on this page from Cornell.

Tuesday, July 1, 2008

Better Know an Arthropod: Bizzaro Lobsters!

Most people are familiar with the lobsters that grace many New England tables this time of year. The American/Atlantic/Maine lobster, Homarus americanus, is a well-known icon of the northeast part of the country and countless J. Crew summer prints.

Therefore, we're not going to discuss them further here today. Perhaps once I read The Secret Life of Lobsters I'll have something interesting to say about them beyond that they're apparently good with drawn butter.

This post is about the bizarro-lobsters of the deep seas. Sharon introduced me to a new one today, so let's view that one first!


The slipper lobster is not a "true lobster" -- it is instead more closely related to some of the other bizarro lobsters, the spiny and furry lobsters. They are achelate, meaning they have no claws. This makes them easy prey for humans, and indeed, if you Google "slipper lobster" you will find their tail meat for sale. (Of course, there is no claw meat to speak of.) Some of them are actually referred to as bugs, which is rather entertaining. No word yet on their position as a sustainable seafood. Not much seems to be known about them, if Wikipedia is at all accurate. Maybe it's better that way.

Next up: spiny lobsters. Popular for eating, also known as "rock lobster", and very colorful. Also, the only arthropod (as far as I know) that was immortalized in song by Fred Schneider (who is also very colorful). Interestingly, spiny lobsters have a unique form of sound production involving rubbing their antennae against a file-like protrusion. I'm not really sure what's going on there, but they're the only ones that do it, so that's neat.

I would tell you something about the furry lobsters, but there doesn't seem to be much to tell. (Except that if you start thinking too hard about the concept of a furry lobster, it can sort of hurt your brain.) Besides, you don't want to hear about true furry lobsters, you want to hear about this:

Kiwa hirsuta

Kiwa hirsuta, also entertainingly known as the yeti lobster, is not a true lobster or in the Achelate group with the other "bizarro" lobsters. Kiwa is in its own brand-new family, Kiwaidae, all by its lonesome. See, this beautiful, samba-dancing lobster, which you might be tempted to call a furry lobster but is not, was only discovered in 2005, chillin' at the bottom of the Pacific ocean. It lives on hydrothermal vents (so, maybe not chillin', per se), is pretty much blind, and may use all those "hairs" to detox after hanging around the vents, which spew mineral toxins.

My favorite part of this lobster is not that it's yellow, not that it's furry, and not that it's a deep-sea critter. (Although I love deep-sea critters, they're so bizarre!) My favorite part is that it was only found three years ago. I spent most of my life on a planet where no humans knew this thing existed! I suppose Kiwa knew it existed, if decapods can have self-awareness. But we did not know. There are still new things out there to find, if we look hard enough! (As I mentioned in my previous post, the world is just awesome.)

So there you have it. OK, true, none of these critters are true lobsters, but they all have lobster in their names and are therefore acceptable for a not-entirely-scientific blog post. (I didn't name the blog "Correctly Taxonomied Creatures," did I?) I hope you enjoyed your bizarro lobsters. Now please pass me some drawn butter, I want to dip my asparagus in it.

Friday, June 27, 2008

Just Awesome

Apparently I'm a blogoslacker, because it's been, what, more than two weeks? Yeah. I was running dry on material and very busy going back and forth for wedding plans and such. Bad blogger! I'm still a little low on material, but I have a couple things I'd like to share. Brace yourselves, I'm back!

Dustin and I watch a lot of Discovery Channel. Mostly Mythbusters but also some other random nature shows and things like that. If you watch Discovery Channel enough, you will see these commercials, which are for the Discovery Channel.

60 Second Spot

30 Second Spot

They're just... great. And slightly different, worth watching both.

Anyway, I was simply delighted by today's XKCD.

I don't really have a lot to say about this, they sort of speak for themselves. One thing that comes to mind, however, is that I sort of feel like these spots very succinctly address why I blog: "The world is just awesome." Yes, yes it is, and I'm trying to highlight that one "Better Know an Insect" at a time.

I love the insects, I love to look at birds,
I love old fossils, I love big mammal herds.
I love the whold world, and all the beauty here
Boom-de-yada, boom-de-yada, boom-de-yada, boom-de-yada...

Thursday, June 12, 2008

Fashion + Science

At first I was very distressed that these flippin' awesome shirts appeared to only come in one color each for women, while men had their pick of several. Then I realized that you can actually just design your own -- color, cut, everything. Sweet!

Now the only question is, do I prefer "the devil put dinosaur bones in the ground" or "the five basic elements"? Such hard decisions!

Teach the controversy... Atlantis did exist!

Tuesday, May 20, 2008

Cynthia Nixon

Cynthia Nixon needs to get to the AMNH more often.

From her interview in the NY Times Magazine this past Sunday:
Has anyone ever told you that you resemble the woman in the Parmigianino painting “Madonna of the Long Neck”? I have a friend who sometimes calls me Bronty, short for brontosaurus, the dinosaurs with the really long necks. They have a new name now, apatosaurus.
Uhm... yeah. So that new name has been in place since 1903. Not... actually... that new. This is the sort of comment that just makes me roll my eyes and groan.

It needed to be said. It bothers me when people say things like that. It suggests that our education system hasn't been updated since 1903, which might be true, and is disturbing.

Saturday, May 17, 2008

Massive NY Times Update

One of my favorite hobbies (if you can call it that), as you have surely noticed by now, is reading the New York Times. I love the Times. I am a Times junkie. When I don't get to read my articles I get a little cranky.

What's your favorite section? (Tell me in the comments!) You might think that mine is Science, but you're only half-right... it's actually more of a toss-up between Science and Opinions. I love the editorials and columnists, especially arguing with David Brooks and calling people with incorrect opinions names while sitting at my computer. I also read the Education section religiously, looking for religion trying to interfere with education.

The upside of this is that it gives me a lot of blogging material. The downside is that I got backlogged during the end of the semester and I now have more articles to post about than I will ever get to, since new stuff keeps appearing! (That's why they call it the news.) Very frustrating. So, here is a rundown of everything I wanted to post in the last few weeks, with brief commentary, all in one big post. They're not in any particular order, and some of them are not recent, but they're all interesting reads. Enjoy!
  • Exodus Exegis -- Kristol's editorial about the 3 presidential candidates' Passover greetings.
  • Bambi (1942) -- the original review of Bambi, back when deer were more cute than a nuisance.
  • Tests Confirm T. rex Kinship with Birds -- geneticists confirm what we've known for a while.
  • 2 Clues Back Idea that Birds Arose from Dinosaurs -- paleontologists had this idea already fleshed out in 1993. Based on evidence from bones. Oh, the horror.
  • Noble Eagles, Nasty Pigeons, Biased Humans -- humans tend to assign morality to the animal world, to varying degrees and with various consequences for our perception. I could write a whole blog post about this, but I think I'll hold off for now.
  • An Elephant Crackup? -- one of the most moving, fascinating, and troubling articles I have ever read. Published over 18 months ago, it still haunts me. War has considerable consequences for animals other than humans.
  • Albert Hofmann Dies at 102 -- the inventor of LSD made it to 102; in related story, flying pink elephants have turned 70.
  • From Auschwitz, a Torah -- a Torah that survived Auschwitz is restored and rededicated. The story of how it was found is a great read.
  • Battle at Kruger -- how an 8-minute amateur video of lions, buffalo and crocodiles became an Internet phenomenon and then the subject of a 1 hour documentary. If you haven't seen the original, check it out. Note: had I posted this video, I probably would have titled it, "Between a Croc and a Herd Place."
What, you're still here? I didn't give you enough stuff to look at? Go read some of these articles!

Sunday, May 11, 2008

Mind Your Manor

There are many, many places I want to visit. I hope to eventually visit all continents, and perhaps even all countries. But one thing I have always wanted to do is to visit Kenya and see the many marvelous creatures living on the savanna.

And what could be better than meeting some of the natives over breakfast?


I'm referring, of course, to native giraffes. When you visit Giraffe Manor, which is just outside Nairobi, they join you for breakfast, at least from the neck up, and then hang about all day. With long, elegant necks, lovely eyelashes, and legs for days, who wouldn't want such elegant company?

There was a story in Vanity Fair about them last October, and they've been featured in numerous other magazines. You can see them in motion in this clip, which also discusses the education and conservation mission of Giraffe Manor.

PS: Thanks to Phil and Karen for the inspiration.

Friday, April 18, 2008

Smoking Guns and Drunken Logic


Today is April 18!

You know what that means, right?

Today's the day Expelled opens nationwide!

The Times has a brief and scathing review.

From the review, it sounds like Ben Stein listened to Billy Flynn: "Give 'em the old razzle dazzle, razzle-dazzle 'em... Long as you keep 'em way of balance, how can they spot you've got no talents?"

You're just a bagel, Ben. And your arguments are like a piece of Swiss cheese -- nutty and full of holes.

PS: I couldn't bear to post a picture of Ben Stein's smug face on my blog, so I put up a picture of Mr. D. instead. He looks displeased about the movie too.

Thursday, April 17, 2008

10 Reasons to Rent "Life in the Undergrowth"


Rent it! D. and I just watched the last episode a few weeks ago. It is amazing. It was far too short, in my opinion, for all the diversity of creepy-crawlies out there, but it was nonetheless an astonishing nature documentary.

There are actually eleven good reason to rent it. Check out these ten video clips that the producers considered the highlights of the series.

(Don't worry, they're short, but if you're really pressed for time, the slugs mating, the feather-legged bug, and the titan beetle are my favorites. Oh and the bees. Check out the bees!)

The eleventh reason? This man:

Sir David, with friend.

Sir David Attenborough -- do you need any more reasons to watch anything? Go rent it now! I know for sure that Netflix has it. Enjoy!

Tuesday, April 15, 2008

Godwin's Law: The Movie

A new movie is coming out this Friday called Expelled. It claims to present evidence that intelligent design (aka creationism) is being pushed out of academia despite being well-supported and a good alternative to evolution. Oh, and it also links Darwin to Hitler.

Right.

It is propaganda and lies, pure and simple, which is why I'm not actually linking to the movie's web page. (Learn more here.) I actually had this quandary a few weeks ago, and here comes Pharyngula with a solution to my problem! I couldn't bear to link to the actual movie page and boost their Google ranking, but I couldn't just let Ben Stein and his pseudoscience slide under the radar entirely. NCSE to the rescue!

Sunday, April 13, 2008

Better Know an Insect: Giant Water Bug

Like, OMG, I have been totally vertebrate-ing out here. Hares, tortoises... humans!

Let's get back to bugs, eh?

Today's subject happens to be the topic for my insect behavior class tomorrow: the giant water bugs.
Depending on your monitor, this might be life-sized!

Things you should know about the giant water bug:
  • There are several genera that are referred to as "giant water bugs."
  • Really not kidding about that "giant" part, some can be almost five inches long! (Oh, and they fly!)
  • They have one of the most painful bites out of all the insects. (Rated on a different scale from hymenopteran stings, however.)
  • They're true bugs (order Hemiptera) and as such have cool sucking mouthparts. They're predators and inject digestive enzymes into their prey to liquefy them, and then suck out the contents like soup.
  • They really earn the #1 DAD mug every year.
Wait, what? #1 Dad? What's going on here?

Giant water bugs in the genus Abedus are one of the few insects that demonstrate paternal parental care. (Say that five times fast!) After repeated matings (to assure paternity), the female lays her eggs on the back of the male who fertilized them.


He takes care of them for a fortnight or so, even though they may weigh up to four times more than he does. He makes sure they get enough oxygen by "brood pumping", which is to say that he rocks forward and backward to move them through the water. Eventually, towards the end of their development, they encumber his breathing apparatus to the point that he needs to park himself on a plant and stay close to the surface until they hatch.

Furthermore, mama water bugs and unencumbered males will eat any first instar (just after hatching) nymphs that they can get their grasping appendages on, but dads brooding eggs will not eat nymphs. It's not all bad-parent good-parent though; if times are tough, the male will remove the eggs from his back and eat them before moving on to find a better habitat. Mm, embryo-licious!

I hope you've enjoyed these installments of "Better Know an Insect (or Other Arthropod)." I think I'll keep doing them, because they're really fun! I'll probably cut down to once a week or so from now on, but I will keep the series going. Thanks for reading!

PS: You'd probably love to know what my sources are, wouldn't you? Click this link to a Google search for the genus and the author, and prepare to immerse yourself (ha!) in water bug literature. The papers I read today are:
  • Smith, R. L., 1976. Male brooding behavior of the water bug Abedus herberti. Annals of the Entomological Society of America 69:740-747.
  • Smith, R. L., 1979. Paternity assurance and altered roles in the mating behavior of a giant water bug, Abedus herberti. Animal Behaviour 27:716-725.
  • Smith, R. L., 1979. Repeated copulation and sperm precedence: paternity assurance for a male brooding water bug. Science 205:1027-1031.
Borrow your local academic's library subscription if you want to read them... or just ask me for the PDFs. They're really interesting and fun to read!

Saturday, April 12, 2008

The Tortoise and the Hare

This morning I volunteered at Run for the Woods, the EcoGSA's spring 5K to benefit Helyar Woods. I'm not a runner (I think I've mentioned my knees), so I was staffed at a tricky part of the course, guiding runners and making sure they stayed on track.

Standing about in the woods on a beautiful morning left me plenty of time to think. I was thinking about races in general, and Aesop's story about a tortoise and a hare, and I wondered: what's the difference between a turtle and a tortoise or a rabbit and a hare?

I'm pretty sure I can outrun this guy.

First, tortoises. Tortoises are a kind of turtle; specifically, the kind that lives on land, eats plants, and can't swim. (Although they can float. Maybe.) All of the tortoises are in the family Testudinidae, in the order Testudines. As far as I can tell from Wikipedia and from Vertebrate Life (one of my favorite textbooks!), they seem to be a "good group;" that is, they are all descended from one slow ancestor. I can't seem to find anything called a tortoise that is not in Testudinidae. Which is actually not what I was expecting to find; I had been under the impression that tortoise was a catch-all term for turtles that live on land. Interesting! So, tortoises are a kind of turtle.


Definitely not this guy.

Hares, on the other hand, are not a kind of rabbit. Rabbits and hares, along with pikas, are all in the order Lagomorpha. Lagomorphs, in turn, are not rodents; they're the sister order to rodents, and are thus closely related, but there are significant differences between the two. Rabbits and hares are both in the family Leporidae, but the "true hares," again, as far as I can tell via Wikipedia, are all in the genus Lepus. (Which is a very large genus.) There are other lagomorphs also called hares, but they are in other genera. So... what does this mean for rabbits and hares? I'm pretty sure it would be wrong to say that all hares are rabbits, or that all rabbits are hares. Both of them are lagomorphs, and some of the common names seem to be arbitrary. (Jackrabbits are actually in Lepus, for example, making them hares despite their common name.)

This is why I like scientific names. All of the lagomorphs in Lepus are more closely related to each other than to any lagomorphs in Sylvilagus, whether you call them hares, jackrabbits, bunnies, cottontails, or Peter.

Aesop should have called it "The Testudine and the Lepus," just to clear things up a ... hare.

I hate puns. I am not a punny rabbit... damn.

PS: Three interesting things to know about hares:
  1. Those big ears aren't just good for hearing; they help the hare radiate body heat and cool off.
  2. Hares give birth above ground, rather than in nests like other lagomorphs. To compensate for this, their babies are precocial, meaning that they have fur, their eyes are open, and they can run soon after birth. Most other lagomorphs are born in burrows and are altricial, that is, blind, naked, and helpless.
  3. Hares can hit top speeds of 45 miles per hour!

Friday, April 11, 2008

Feeding the World

Right. I said last month that I am not a vegangelical, and I stand by that.

But it needs to be said.

Stop eating meat.

Despite the fact that I am an animal lover, I am not saying this to spare the cute 'n' cuddlies. The simple fact is that we are running out of grain, and eating animals is an inefficient use of grain, and although I sometimes don't like people, it doesn't mean I want a massive food crisis to hit around the globe. It takes 700 calories of grain to produce 100 calories of cow. I don't know about you, but 14% efficiency, to me, is WAY too low.

Some recent reading material:

Grains Gone Wild -- Paul Krugman's editorial from a few days ago.

Farmer's Spurn Conservation Program -- Science/Business Times this week.

First one is straightforward, just read it. Second article... well, do we want to eat or do we want to worry about the birds, as the baker says? Why can't we do both? Cattlemen have the answer:
“This program is taking money out of your pocket twice a day,” said Jay Truitt, vice president for government affairs for the National Cattlemen’s Beef Association. “Do you think it’s right for you to pay so there’s more quail in Kansas?"

The cattlemen and bakers argue that farmers should immediately be allowed to take as much as nine million acres out of the Conservation Reserve without paying a penalty, something they say would not harm the environment.
Of course the cattlemen want more land out of the conservation program, they need it to feed their meat-producing machinery. What if I want to pay for the land in Kansas? It doesn't matter to me if the price of beef goes up, but it does matter to me if there is less land available for our native birds. (And who made a bunch of bakers and cattlemen experts on what would or would not harm the environment? Probably the same group that decided airlines could monitor themselves.)

Further, one of the demands on the food system is that countries that traditionally haven't eaten much meat (looking at you, China) are starting to adopt American-styles diets, full of beefy goodness. So, as though Americans weren't enough of a strain by themselves, people around the world now want to eat the way we do. And there just isn't enough land to support that lifestyle.

We're not going to get any more land. We have one planet, and that's it.

There's really only one solution. Stop eating meat. It's the easiest thing you can do today to save the world.

Thursday, April 10, 2008

Two Stories, One High School Student

Matthew LaClair is a troublemaker.

Last year, he brought a law suit against his high school (in New Jersey!) for a history teacher's utter failure to make the separation between church and state in the classroom. He secretly taped the teacher saying things like, "only Christians had a place in heaven, that the Big Bang and evolution theories were not scientific and that dinosaurs were on Noah’s Ark." (Did I mention that I live in New Jersey too?)

Other than the fact that I'm still getting over this sort of thing happening in New Jersey (!), there are two sentences I find alarming in this article. First: "After the tapes became public, Matthew received a death threat and was shunned and bullied by some of his classmates, he has said." Wow. It's unbelievable to me that his actions would actually be cause for people to shun someone. If this had happened in my high school, I'm pretty sure we would have thrown him a parade.

Second: "In the fall, the board reprimanded the teacher and later adopted a policy barring students from taping in class without a teacher’s permission." I find this vaguely unsettling. What if another teacher is saying wildly inappropriate things in the classroom? How can students prepare themselves to keep church out of school if the school makes rules against what Mr. LaClair did? Very shady if you ask me.

Anyway. Sometimes you don't need a tape; the evidence is already written down and published.

You can't keep a good rabble-rouser down, and he's causing some more trouble in history class. This time, his beef is with a textbook that plays down the causes and impacts of global warming. (For example, although millions of people might lose their homes as coastlines are flooded, they won't have to pay as much for heating! Yay!)

Whether you agree with him or not, this guy deserves a lot of credit for standing up to The Man. Freethinking is not taught in most high schools; anyone who comes away with that particular skill is likely to be self-taught. Mr. LaClair, I salute you.