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Kicking up moon dust.

>> Tuesday, September 22, 2009



Hi everyone! An exciting event is scheduled for October 8th and/or 9th. LCROSS or Lunar CRater Observation and Sensing Satellite, will be sending its upper stage booster rocket flying toward the south pole of the moon. The impacts ejecta will be studied and analyzed for evidence of water in the moons crust. But enough of that science jargon the question you are probably asking is, "Can we see it?" The answer is "yes"; unfortunately if you do not own a fairly large telescope it may be tough if not impossible. But fear not the live video will be shown on NASA TV or you can contact your local Astronomical Society and see if they have arranged a viewing. The crater that is calculated to be the resting place for this upper tage rocket is Cabeus-A, it is near the southern pole of the moon. There is also tons of information if you click on the title of this post. I will be trying to upload a video of the impact here on Potspoon! for those of you that may have cloudy skies, no tv or telescope. So for now go study a moon chart, look up your local Astronomy club or find out where you can watch NASA TV. I will continue to update you later. :-)
-AstroTodd



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Debate! Sex vs. Gender

>> Sunday, September 20, 2009

I haven't done a Debate! in a while, but with all the news circling Caster Semenya, I figured this could be a pretty interesting discussion. I also had a research writing class where this was the topic of discussion for an entire semester. Needless to say, there were some very heated discussions, so lets go straight to the facts.

Defining Sex:

The Medical Dictionary defines sex as:

The totality of characteristics of reproductive structure, functions, PHENOTYPE, and GENOTYPE, differentiating the MALE from the FEMALE organism.
In more generic terms, Onelook.com says:

noun: the properties that distinguish organisms on the basis of their reproductive roles
And last... Biology Online:

The distinguishing peculiarity of male or female in both animals and plants; the physical difference between male and female; the assemblage of properties or qualities by which male is distinguished from female.
However, what all these definitions are leaving out are the groups that don't necessarily fall into these two categories. These are now known as "intersex" individuals. A researcher known for arguing the limits of the two sex system is Anne Fausto-Sterling from Brown University. While we may think that the number of people born intersexed must be really minuscule, we are actually wrong. The following is a summary of Fausto-Sterling's findings as reproduced on the Intersex Society of North America website:

Not XX and not XYone in 1,666 births
Klinefelter (XXY)one in 1,000 births
Androgen insensitivity syndromeone in 13,000 births
Partial androgen insensitivity syndromeone in 130,000 births
Classical congenital adrenal hyperplasiaone in 13,000 births
Late onset adrenal hyperplasiaone in 66 individuals
Vaginal agenesisone in 6,000 births
Ovotestesone in 83,000 births
Idiopathic (no discernable medical cause)one in 110,000 births
Iatrogenic (caused by medical treatment, for instance progestin administered to pregnant mother)no estimate
5 alpha reductase deficiencyno estimate
Mixed gonadal dysgenesisno estimate
Complete gonadal dysgenesisone in 150,000 births
Hypospadias (urethral opening in perineum or along penile shaft)one in 2,000 births
Hypospadias (urethral opening between corona and tip of glans penis)one in 770 births

Total number of people whose bodies differ from standard male or femaleone in 100 births
Total number of people receiving surgery to “normalize” genital appearanceone or two in 1,000 births
Defining Gender:

Gender, while often used interchangeably with sex, is arguably quite different. A common definition sociologist use is social statuses to which males and females are assigned in a society. This is silly things like what is a man's job and woman's responsibilities as construed by ones own society.

Going back to Biology Online, one of their definitions is as follows:
a classification of nouns, primarily according to sex; and secondarily according to some fancied or imputed quality associated with sex.
The consensus is that sex and gender are quite different even though in multiple societies they are believed to be inexplicably entwined.

The Debate:

Do you believe sex determines gender? If someone is an XY female, since the chromosomes indicate maleness, are they then male even if externally and culturally they are placed as females? Is the two sex system becoming a bit more outdated as we no longer try to hide away intersexed individuals? Is it fair to say that because it is so rare we should ignore it? On that same note, using just one of the above varients, Klinefelter, which affects one in one thousand, I ask you this: using the estemated US population on CIA World Factobook of 307,212,123, is it okay to ignore the 307 thousand people with this condition? That is just one of the"conditions." Add in all the rest. The number starts to get much bigger. With a global population of close to 6.8 billion, that is an estimated 6.8 million with just Klinefelter's. So discuss. Feel free to answer any or all of the questions.

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Wolves, Birds, and Other Animal News

>> Sunday, September 13, 2009



It has been a busy week for animals so lets get to it.

  • The gray wolf (Canis lupus) is not making it easy on hunters in Idaho. This year, the state of Idaho sanctioned a wolf hunt and issued 14,000 wolf hunting permits. This large number of permits is despite the fact that the population of the wolves is only estimated at less than 900. In the first 11 days of the hunt, only three wolves have been tagged (legal kills). Montana is due to start their wolf hunting season (population is only 500 there) this week. There are talks occurring as to whether or not the gray wolf should be on the endangered species list again.
  • A missing bird was found flying at sea. This is not the booby I mentioned last time. This time it is the Fiji petrel. The bird is incredibly rare and only through a very thorough bird "hunt" were researchers finally able to see them. The only known specimen was an immature one from Gau, Fiji in1855. It wasn't until 1984 that the bird had a confirmed sighting again. You can read more about this elusive bird here.
  • Honeybees are telling ants to "buzz off" quite effectively. For the first time on tape, a bee has been caught using its wings to blow away ants that are attacking them and their nests. The bees actually change their wing beat pattern to one far more powerful and aggressive to blow the ants away.
  • A few new species have been found inside a crater in Papua New Guinea. Among them were various species of amphibians, plants, and one of the world's largest rats. Mount Bosavi crater was the subject of a recent expedition set up by the BBC. Most of these new species are believed to not exist anywhere else on Earth!
  • This last snippet is a bit of local news. Recently, I wrote about turtle nesting in the VI. Well, as luck would have it, Brewers Bay (the location of my opening credits for many Potspoon! videos) has a turtle nest! Not just any turtle nest either. I have lost of luck spotting green turtles at this beach, but the nest is a leatherback nest! Leatherbacks are the fourth largest reptilian species behind three crocodilians. They are endangered worldwide. The picture above is said nest. I am so excited!
That's it for your animal news snippets.

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Are you Certifiable?

>> Friday, September 11, 2009


Aw, come on! I don't mean it like that! I mean your backyard. I know a few of my readers have a lot of visitors in their yards and that is just what the National Wildlife Federation is looking for. NWF is having a drive to certify 150,000 yards this weekend. As an added incentive, by applying for certification you get:

  • A personalized certificate that recognizes your NWF Certified Wildlife Habitat™.
  • A free NWF membership which includes a full year's subscription to the award-winning National Wildlife® magazine and 10% off all NWF catalog purchases.
  • A free subscription to the quarterly e-newsletter, Habitats, full of insightful tips and information on gardening and attracting wildlife year after year.
  • Your name listed in NWF's National registry of certified habitats...to recognize all you've done for wildlife.
There are some requirements you will need to fulfill to make sure your backyard or garden is eligible so visit the Garden for Wildlife page to find out more. The page is also full of information on how to start a wildlife garden. It would be a great way to commemorate National Day of Service and Remembrance by providing habitat for many animals that are so threatened and by helping to beautify your neighborhood.


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A Birds Return From Extinction

>> Wednesday, September 9, 2009

Photograph by Paul Nicklen for National Geographic

There is a bird that has been considered extinct for a while is back. Don't worry. They didn't come back as zombies or undead minions of some sort. It was actually just a bizarre case of mistaken identity.

The Tasman booby had been considered extinct since the 1700's when sailors consumed what was thought to be the last colony of these birds. Many scientists thought that the Tasman booby and the masked booby were closely related, but it wasn't until recently that they were proven to be one and the same. Besides a bone study, they also studied the DNA and found a perfect match! Masked boobies are on the threatened species list so hopefully now we can save them from a second extinction. :D I'm just glad they weren't really zombies!

You can read more here.



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Introduction

>> Tuesday, September 8, 2009

Rainbow Photo credit and copyright: Terje O. Nordvik
Hello everyone! I feel like I should share with you a little about me, so that when reading any posts by me in the future you can have some understanding of the who and the why. I'm currently a 30 year old science student and teacher. For eight years I have taught science (mainly Astronomy) to 5th and 6th grade students all over southern California. I am currently back in school with hopes of obtaining a masters degree in Observational Astronomy. With that degree my goal is to begin a traveling astronomy outreach education program that will hopefully jump start the California science standards. Most 6th graders here in my town of Victorville, CA are moving on to junior high without much preparation in science. Most if not all cannot explain how we have seasons. There are several reasons for this outcome, the first and most important is that classroom teachers are pressured to raise scores in other subjects like math and reading (very important subjects also) while science takes a back seat until junior high. I feel since I have a passion for this subject I might as well use it for good, rather than evil. :-) But fear not fellow readers, while it may seem that my astronomy blurbs might destroy a bit of the mystique and magic of an event or object you see from time to time, it can also bring in more majesty than it had before. Take this picture of the rainbow for instance, it is very beautiful and awe inspiring if you know nothing about how it's created. But, even with the knowledge that it is created by refracted white light from the Sun by millions of water droplets can still be amazing. Especially if you add this: Although light from the Sun is in fact many colors and wavelengths it can't help but be perceived by us as a white light because it is moving way too fast to be separated by our brains. The second that light from the sun hits the falling droplet of water in a rainstorm the light bends and is refracted, spreading it into its many colors. I know, perhaps this is redundant information from our days in 5th or 6th grade, but did you know that that every rainbow on Earth contains all the information about what our Sun is made of, from every specific element to how old it is and how long it has before it dies? A crazy way of looking at it is, the rainbow actually is the Sun's DNA. And when one of those colorful photons of light from that rainbow hit the cone cells in your eye it is literally ending what is on average a million year plus 8.5 minute journey for that photon! More on that journey in another post. ;-)
So in conclusion I can only hope that my blogs at least entertain you, and maybe teach you something you didn't know. I am of course constantly learning and I love to tackle questions even if I don't know the answers. So fire away on those questions and as we say in the Astronomy community, "Keep looking up."

Thank You.

Sincerely,
Todd Gonzales


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Fish Farming

In the beginning of the year there, was an article I wrote about published in Biology News about the rapidly growing industry of fish farming. Aquaculture is now responsible for 50% of all the consumed fish in the world. In a study completed by Stanford University, growth trends and environmental impact were looked into. While this move into aquaculture seems promising and sustainable, there are still a few kinks to work out.

While the farms reduce strain of wild fisheries for certain species, many species are still farmed in pretty unsustainable ways. Many fish farms use large amounts of fish oil and fish meal to enhance the flavor of the fish they are eating. All of this fish oil and fish meal comes from wild caught anchovies and sardines. This is putting a strain on those fisheries. Small schooling fish like these are an important part of the ecosystems in which they thrive so reducing their numbers could cause a significant strain on other forms of wildlife. To produce one pound of salmon, it is estimated that approximately five pounds of wild caught fish are used. Salmon is still a popular choice for consumers around the world, so that is literally tons of wild fish caught. Makes the salmon you eat seem a bit more valuable, doesn't it?

Not all farm raised fish have this sort of impact, though. There are many species of fish that are very well farmed and incredibly sustainable. Many of these are vegetarian fish like carp and tilapia. Between 1997 and 2007, there was a decrease in the amount of fishmeal used to raise these fish by about half. However, there is such a high demand for these fish that many of the farms still use some fishmeal and 12 million metric tons of fishmeal were used for vegetarian fish in 2007! That is a lot of fishmeal! NOAA is working on a plan to regulate and better manage these farms to become more sustainable and really become less of a strain on the marine ecosystem and the environment. Remember, to really know where your fish is from, just ask. If you want more info, download a Seafood Watch guide for your area. You can even check during dinner from your cell phone by going to mobile.seafoodwatch.org. I carry a sushi guide and national guide with me everywhere I go!


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Lunacy!?

>> Saturday, September 5, 2009


(Picture courtesy of the NASA, Astronomy Picture of the Day Archive)

"When the moon hits the sky like a big pizza pie, that's.......an illusion?" Actually the moon is really there on the horizon but the "big" part is the illusion. It is a common trick played on us by our brains. The crazy thing is there is no change in the moon's size when it is on the horizon and when its above us in the sky. I know what you are thinking......Todd you're crazy, I saw the full moon rising and it was huge! Yes, it appeared huge, but really it wasn't. Our brains tend to think of it this way, if a distant object like the moon is perceived to be on the horizon it must be closer and if it is closer than it must be bigger. Our brains have never known the opposite. Simply put, the closer you get to something the bigger it appears. And strangely enough the moon always stays roughly 239,000 miles from us in its orbit, always. There is another theory that the atmosphere magnifies the image of the moon making it appear larger when it is lower to the horizon. Scientist agree that the atmosphere doesn't have the properties to create that kind of effect. Well, there is a simple test you can do to find out if this "growing" moon is in fact a product some strange scientific blend of physics or simply a crazy illusion created by your brain. Next time there is a full moon on the low horizon that looks bigger than normal, take something small like an eraser on your pencil or even your pinky finger and hold it at arms length with one eye closed. Measure the size of the moon in comparison to that object then do it again later when the moon appears smaller. You should notice that the moon did not change in size, but your brain in fact is a "Luna"tic. :-)




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Green Roof


Recently, I noticed a few more articles than normal about green roofs. An article put out yesterday in the Vancouver Courier talks about a group that is raising awareness for green roofs. In ScienceDaily yesterday, there was an article about a study done at Michigan States University's Department of Horticulture. The study showed the success rate of succulents grown based on the growing mediums depth. With all this talk going on about green roofs, I figured the least I could do would be to explain the concept in case you haven't heard about them yet.

Green Roofs have been a popular idea in Europe for a while, but it is an idea that is really starting to take off in America as well. According to the article published in ScienceDaily, green roofs increased in installation by 30% between 2006 and 2007.

While rooftop gardens are something most are familiar with, this is a little less intensive. Most of the plants planted on green roofs are succulents or evergreens so there is less care required. than with a traditional garden. The plants aren't potted, they are actually a layered roofing material. Really impressive stuff! Typically, it is a waterproofing layer, drainage layer (like rocks), growing medium layer (like peat and manure) , and plants. The picture above is the roof of a parking structure at the Marriott Hotel in Vancouver, BC.

I'm sure you may be wondering why anyone would go through the trouble. Well, there are many benefits to green roofing. First off, they last longer than traditional roofs. There are no shingles or tiles to replace or much of a need for gutter care. This brings us to the benefit of decreasing storm drainage water, lessening the impact of runoff in sewage and drainage systems. Green roofs also help insulate the building, significantly decreasing cooling costs in summer. In large cities, green roofs help reduce urban heat island effect and improve air quality. Chicago City Hall was one of the first green roofs installed just to study the effects on urban heat. Some of the added benefits to a green roof are protecting the roof structure itself from damage due to extreme weather fluctuations, reduce glare in cities, attract more birds and butterflies to an area, and the added benefit of creating an oasis from urban canyons. It also just looks really cool. Many of the houses in the Faroe Islands have grass roofs and this adds to the charm and beauty of the area.

You can find out more about green roofs at Greenroofs.com and How Stuff Works.

Photo is from pnwra's photostream on Flickr and is licensed under Creative Commons.


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Catching Fire

>> Thursday, September 3, 2009


Many people today are touting that uncooked foods are the way to go, but is that necessarily true? In a new book by Dr. Richard Wrangham, primatologist at Harvard, the point he argues is that it is not. He even goes on to explain how cooking actually helped us separate and speed up our separation from Homo erectus to Homo sapiens. The book came out in May, but Dr. Wrangam was recently interviewed on NPR's Talk of the Nation and had some pretty interesting and compelling arguments.

The books is entitled Catching Fire: How Cooking Made Us Human and covers just not Wrangham's expertise, but uses studies in anthropology, paleontology, evolutionary biology, and ape studies to round out his hypothesis. Of course, many raw-foodists have a bit of a problem with this idea. Raw-foodists have the tendency to believe that it is natural to eat your food raw. Many of them use the argument that we only really began cooking about 400,000 years ago and that it takes millions of years to evolve to a new diet. Wrangum argues why it is possible that this could have occurred right when we speciated.

As inevitable, a raw-foodist called in and asked a question:

KATIE: I've recently been introduced to the raw food diet, and I was wondering what you think about that and if you think it's all a hoax.

RAEBURN: Go ahead, doctor(ph).

Dr. WRANGHAM: Well, thanks, Katie.

RAEBURN: Go ahead.

Dr. WRANGHAM: I mean, that's a great question. And I think that it - the funny thing about the raw food diet is that many of the proponents argue that it is the natural thing to do. And I'm quite sure that it's not the natural thing to do in the sense that we're not biologically adapted for it, because if you look at raw foodists nowadays, they lose weight on a raw food diet, even to the point where women, in the only large survey that is being done of this, turn out to stop menstruating in half the cases when they are on a 100 percent raw food diet, an indication of how little energy they have. The scientists conclude that raw food diets lead to chronic energy shortage.

So if you want to gain energy, if you're living in the Third World, like a third of the people in the world, very hungry, then you - the last thing you want is a raw diet. But in our society, a raw diet can have all sorts of advantages. It can help you control your weight, and it has other advantages, too, for some people. I mean, there's lots of benefits that people report.

Some people find that they get reductions in rheumatoid arthritis, for instance, some very specific things like that. But many people feel a greater sense of well being, more vitality - quite often, less pain. And I think partly, this is going to be due to just eating less, and partly it probably is due to the fact that some people may be allergic or have some kind of response to the chemicals that are produced in cooked food. So, it's a very personal thing. You know, for some people, raw diets can be terrific. It's just that, you know, don't think they're natural, they're not.
Now, one of the best arguments he has for this was given as an answer he gave when being interviewed by Publishers Weekly:

Biologically, we are not well-adapted to raw foods. Our teeth and stomachs are small compared to those of chimpanzees or gorillas, because we don’t eat huge quantities of tough, high-fiber raw foods. Our large intestines are relatively small because we don’t have to retain and ferment raw food for hours. Humans don’t thrive on raw food—they lose weight, and women’s fertility is severely compromised.


You can read the entire transcript here. I plan on purchasing this book and giving a bit more insights to his arguments at a later date.




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Arctic Creatures Photos

>> Wednesday, September 2, 2009

The BBC posted a series of pictures of creatures (many of the invertebrate persuasion I am partial to) that will likely take your breath away. Scientists recently released photos of many of the "jelly-like" creatures they encountered using submersibles to dive into the Arctic. They are stunning, to say the least. Sadly, this is all I have as it appears to be a slow news day. Most of the news is about our mutated genes and how related we all are. Really, though, go look at the photos... they are out of this world.


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Great Gorilla Run

>> Tuesday, September 1, 2009

The Great Gorilla Run is an annual costumed marathon charity event in London. It has also started expanding to other large cities like San Fransisco and New York. The participants dress as gorillas to raise money for gorilla conservation. Since it is the Year of the Gorilla, the UN ambassador for YoG2009 is participating in the race. It seems like a very fun way to help raise gorilla awareness. Nothing like a pack of 500 people running through London streets in ape costumes to get ones attention!

The ambassador, Ian Redmond, is currently traveling to gorilla habitats throughout Africa and you can follow along on his blog. If you are in the London area and wish to participate, they are still taking applications. There are many ways you can help.


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