Category Archives: Uncategorized

How smart are parrots?

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Parrots are smarter than Nebo the dog

“Nebo.”

The dog’s name came from the direction of the enclosed front porch of the tin-roofed concrete block home of my friend Bwana Ndege, in Isiro, Zaire.

“Nebo.”

It sounded like an older woman, a somewhat crackly voice, insistent.

“Nebo. Kuya. Nebo.”

The old woman was calling the dog, in Swahili. Nebo, sleeping at first on the cool concrete floor under the dining room table startled awake, ears scanning. Nebo was a large Doberman who had never learned that one-man one-dog thing. He was gentle. And listening carefully.

“Nebo.” Louder, more insistent, the voice from the porch called. This time Nebo got it, jumped up, pushed his way past the legs of chairs and bounded past me in the living room, and onto the porch. Nobody there. Who had called him? I wondered if dogs ever considered that they might have dreamt something they they thought they had heard. Perhaps thinking that, Nebo looked around for a moment, and retired to his cool sleeping spot in the interior of the house.

“Heh, heh, heh, heh,” the old woman cackled. Bwana Ndege’s African Grey Parrot had fooled the dog again. And was clearly amused.

This happened… Read on.


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How many lakes are there?

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How many lakes are there? We don’t actually know. Lakes are often undercounted, or small lakes ignored, in larger scale geophysical surveys. It is hard to count the small lakes, or in some cases, even to define them. A recent study (published in Geophysical Research Letters) examines this question. We want to know how many lakes there are, and how much surface area they take up, in order to understand better the global Carbon cycle (and for other reasons). From the Abstract of this study:

An accurate description of the abundance and size distribution of lakes is critical to quantifying limnetic contributions to the global carbon cycle. However, estimates of global lake abundance are poorly constrained. We used high-resolution satellite imagery to produce a GLObal WAter BOdies database (GLOWABO), comprising all lakes greater than 0.002 km2. GLOWABO contains geographic and morphometric information for ~117 million lakes with a combined surface area of about 5 × 106 km2, which is 3.7% of the Earth’s nonglaciated land area. Large and intermediate-sized lakes dominate the total lake surface area. Overall, lakes are less abundant but cover a greater total surface area relative to previous estimates based on statistical extrapolations. The GLOWABO allows for the global-scale evaluation of fundamental limnological problems, providing a foundation for improved quantification of limnetic contributions to the biogeochemical processes at large scales.

So, there are fewer than thought but they take up more space than thought. Who would have thought?

Interestingly, there are more lakes at higher latitudes. Because of the uneven distribution of land surface in the Northern vs. Southern Hemispheres (more land in the north) this means more lakes in boreal regions, and more specifically, more lakes in previously glaciated regions. This makes sense because glaciation (and deglaciation, melting of the glaciers) produces lakes. The immature terrain produced by a glacier eventually matures with erosion joining streams and rivers to those lakes, making them disappear. If no glaciers return to a previously glaciated region, eventually all the lakes (or most of them) will disappear.

Look at the Congo, Amazon and Nile basins for examples of large inland regions in the tropics. There are very few lakes. Now look at North America north of the maximum extent of the recent (Wisconsin) glacier. Lots and lots of lakes.


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Keep an eye on Hurricane Gonzalo (Updated)

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Atlantic Hurricane Gonzalo is a Major Hurricane, Category 3 at the moment, and it is heading towards Bermuda. The storm will weaken a little bit before getting there but it will still be major. This is a significant event. It is possible that a storm surge of about 10 feet could occur there. Gonzales will be very near Bermuda in by Friday Evening, and past it by Saturday morning.

Interestingly, Gonzalo is expected to remain a hurricane strength storm (though it may be called a “post-tropical cyclone” it will still have sustained winds at hurricane level) as it passes the Canadian Maritimes. It will be interesting to see how much of its hurricane shape it maintains as this happens. Gonzalo will still be a pretty nasty storm when, in several days it arrives in the general vicinity if Ireland and Great Britain.

Screen Shot 2014-10-16 at 9.35.32 PM

UPDATE:
From NWS:

Although it appears that a gradual weakening has begun, Gonzalo is
expected to be a dangerous Category 3 hurricane as it
moves near or over Bermuda later today. After that time, increasing
shear and cooler waters along the track of the hurricane should
result in a faster weakening. Gonzalo is likely to transition
into a post-tropical cyclone by 36 to 48 hours as it moves near or
south of Newfoundland, and become fully extratropical thereafter.

Significant coastal flooding on Bermuda is likely if Gonzalo
continues on the current NHC forecast track. Although specific
amounts cannot be forecast for Gonzalo, Hurricane Fabian produced an
estimated 10 feet of storm surge when it moved over Bermuda as a
major hurricane in 2003, and similar values could occur with
Gonzalo.

Bermuda radar:
Screen Shot 2014-10-17 at 10.00.05 AM


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Research Suggests Healthcare Workers Could Balk At Treating Ebola Patients

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Given the current and developing situation in Dallas, where two health workers have become infected with Ebola while caring for a patient, it is reasonable to ask if health workers might decide to call in sick for a few months until this whole highly infectious often fatal disease thing blows over. Daniel Barnett, of the Department of Environmental Health Sciences at the Johns Hopkins Bloomberg School of Public Health, has looked into health workers’ unwillingness to report to work when there is a potential for infectious-disease transmission to themselves and their family members.

The health workers I know tend to run into burning buildings or jump into frozen lakes and such to rescue people, so I can’t see that happening. Apparently it has been an issue in Spain and in West Africa. I can’t explain Spain, but things are so dismal in West Africa that it is not at all unexpected. But what about in the US?

So far there doesn’t seem to be an issue according to Barnett’s research, but he cautions that continued willingness to work with Ebola patients here is not assured. In an earlier study, Barnett and colleagues found that one-third of workers at a large U.S. urban medical center would be unwilling to respond to a severe infectious disease outbreak.

“An individual’s personal perception of the importance of his or her work during the response phase and his or her sense of confidence in performing this role effectively, are among the most powerful determinants of willingness to respond,” notes Dr. Barnett. “Our research also suggests that familiarizing health responders with laws and policies designed to protect their wellbeing in an emergent infectious disease event is important for bolstering response willingness,” Barnett adds.

Barnet notes that for training to be effective it must provide clear guidance on infection control protocols and instill a clear understanding of outbreak response duties. I asked him about the domestic side of this, about training of health workers regarding in relation to thier behavior or decision making when they are off duty. This seems to have arisen as an issue with the second Ebola-infected worker in Dallas, who took an air flight after starting a fever (if reports are accurate) and before diagnosis as having the disease.

“Preparedness and response trainings on emergent infectious diseases need to cover not only work-related protocols,” he told me, “but also address behavioral elements outside of the healthcare setting in the interest of public health. To date, there’s essentially been no research or ‘environmental scan’ on the extent to which such trainings actually encompass behaviors and practices outside of the health care workplace. However, this type of training on precautionary measures outside the workplace is essential. It needs to be imbedded into trainings and harmonized across healthcare institutions to ensure consistency.”


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For a few lucky teachers, an adventure of a lifetime

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From the NCSE:

The National Center for Science Education is pleased to accept applications for its inaugural class of Grand Canyon Teacher Scholars. Lucky teachers will be given an all-expenses-paid seat on NCSE’s annual Grand Canyon expedition, an eight-day voyage through some of the world’s most greatest geological wonders. It’s an opportunity of a lifetime, giving deserving teachers a hard-earned vacation and an incomparable learning experience.

For over a dozen years, NCSE has chartered a raft trip through Grand Canyon, with staffers Steve Newton and Josh Rosenau currently taking the lead in the unique and tongue-in-cheek “two model” tour of the canyon’s geological history. Rafters descend through the strata, considering the hundreds of millions of years revealed on the canyon’s walls, and examine how creationists try to explain that same evidence, and why such efforts are doomed to fail.

“The Grand Canyon is the best geology classroom in the world,” explains Steve Newton, a programs and policy director at NCSE and a geology professor at the College of Marin. “There’s no better way to see deep time and explore the processes that shape our Earth than to raft down the Colorado River as it cuts down through the eons, past the Great Unconformity, to rocks almost half the age of the Earth.”

“Any teacher would be lucky to be chosen for this scholarship,” added Rosenau. “Aside from the wonders of the canyon and the inspired presentations Steve and I prepare, the great joy of the NCSE expedition is the mix of scientists, scholars, and brilliant polymaths who join us. The winning teachers will have a chance to learn from a lot of brilliant people, and bringing more teachers into the campfire conversations will enrich all of our experiences.”

“We all want to find ways to honor the amazing work science teachers do, and I’m glad NCSE has this opportunity,” explained NCSE executive director Ann Reid. “It’ll be exciting to see all the applicants, and to give everyone a chance to help give teachers this spectacular reward.” Teachers are encouraged to apply now (the deadline is January 5, 2015), and anyone interesting in helping teachers have this experience can contribute to the scholarship fund..


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Apply for a Teacher Scholarship to Raft the Canyon with NCSE

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Apply for an all-expenses-paid eight-day raft trip down the Grand Canyon with the National Center for Science Education! Winners will receive free airfare, lodging before and after the trip, and the trip of a lifetime, exploring the wonders of Grand Canyon with a team of scientists, educators, and science fans. The application form is at the bottom of the page, but please review this information on eligibility, requirements, and what to expect from the trip before submitting an application.

Apply here


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The Methane Bomb Thing Isn't Really A Thing (Global Warming)

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Peter Sinclair has done some nice work to clarify the famous Methane Bomb thing.

Briefly, the Methane Bomb is where methane trapped on the floor of the Arctic ocean gets out in large quantities because it is warm. This makes more warming. So, more of this Methane comes out, causing it to get warmer, then this cycle keeps up for a while and in short order civilization collapses and we all die.

It turns out that the science DOES NOT SUPPORT A METHANE BOMB OR ANYTHING LIKE THAT. It just doesn’t. Unfortunately this has become a point of contention among people who are truly, seriously, concerned about climate change. It is a little like Ebola. If you take Ebola seriously and are approproately afraid of it, it seems, you are required to believe that it has already “gone airborne” and civilization will end and we will all die (Ebola has not gone airborne and will not go airborne). With Methane, if you truly love the planet then you are required to believe in the Methane Bomb. Even if it isn’t for real. And, it isn’t for real.

Dr. Carolyn Ruppel is one of the senior scientists who study Arctic Methane (and bottom-of-the-ocean Methane in general). In two videos put together by Peter Sinclair, she goes into significant detail about this problem.

Calling the Methane Bomb Squad
Methane Bomb Squad Part 2 – Dr Aradhna Tripati on Undersea Methane
Methane Bomb Squad Part 3: Dr. Carolyn Ruppel on Siberian Shelves

This is the end of the old Arctic Methane discussion and the beginning of the new discussion.


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How to turn Apple Spotlight on and off

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I hardly ever use spotlight. It is a search tool that is “well designed” meaning it looks pretty. Pretty search tools aren’t worth much. I need to be able to go from simple dumb search to complex detailed search, drill down, change parameters. If all I needed was a list of files or directories with a string in them, I’d probably already know where the damn thing is. I want to find a file that didn’t show up that way, that I don’t remember the name of, but that I know I made last weekend and it had the word “meteor” in it but it could have been spelled wrong and I cant remember if it was a spreadsheet or a text file but it was probably on a certain external hard drive. Chances are Spotlight is not going to handle that.

But, spotlight is great at doing something else. Using system resources. Did you ever have your computer slow down and act like the processor was brain dead and it had no memory over the period of an hour or two while you were using very few apps and doing nothing complicated? Chances are that was Spotlight indexing everything on your computer. Which you will never use. Because who uses Spotlight?

Well, OK, sometimes you want Spotlight, so maybe having that index is a good thing. But when you are trying to get some work done and Spotlight is interfering and shows no sign of letting up, then the sane thing to do is to kill it. You can unkill it later.

I found this here. To kill Spotlight in Mavericks or large cat versions of OSX, you go to the command line (terminal) and type in this (or copy and paste it!), for Mavericks and Mountain Lion:

sudo launchctl unload -w /System/Library/LaunchDaemons/com.apple.metadata.mds.plist

To make it come back to life again, you command your computer thusly:

sudo launchctl load -w /System/Library/LaunchDaemons/com.apple.metadata.mds.plist

For Snow Leopard use this method.

IF Spotlight has been annoying you, one strategy is to turn it off while you don’t need it, then later, when you are planning to go do something else for a few hours, turn it back on so it does its job while you are not around.

There should be a way to give Spotlight lower level access to the CPU so it stays more in the background. And, at the same time, to give the apps you want to be always responsive a higher priority. I’ve not explored that for this operating system. There are reasons to think, though, that this would not work well for certain important tasks. Any suggestions?


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How to be properly scared about climate change: A talk by Greg Laden

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Monday, the 20th, I’ll be in Saint Cloud. More information here.

Details:

On October 20,2014 the Central Minnesota Freethinkers are proud to present a program by Greg Laden, noted writer about climate change, evolution, science education and more at National Geographic, Science Blogs and other venues. His presentation will be held at the Unitarian Universalist Fellowship Hall in St. Cloud at 7:00. The admission is free and the program is open to all who wish to attend.

While trained as a biological anthropologist and archeologist and having research experience at many locations in the United States and in the Congo and South Africa, and, having taught at several colleges and universities, today he mostly engages in climate change related science communication.

He will explore the most current research about climate change, framed in the context of time. Global warming is often spoken of as something to worry about in the future. Different people may express concern about different things, or perhaps even a studied lack of concern about some of the effects of climate change. Much of this depends on the time frame of expected changes. For example, no one doubts that the vast majority of glacial ice on the North and South poles is doomed, but when will it melt? A common conversation item these days is the civilization-ending species-extincting “Methane Gun.” Is that a real concern?

In this discussion he’ll explore the time frame of climate change, look at the most extreme scenarios that people are talking about today, and evaluate them. Bring your favorite scare story and we can work out whether or not we should be scared, by how much, and when!


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Adding a third party keyboard in iOS 8

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One of the great things about Apple is that they maintain tight control over the hardware/system/software triad that bad design can’t creep into your digital life and ruin your day. One of the bad things about Apple is that they maintain tight control over the hardware/system/software triad so you can’t always have what you want. If you’ve been wanting one of those great keyboard replacements that, maybe, your spouse has been using all along on her android, you can have it now on your iPad or iPhone after you upgrade to iOS 8

Go buy Swiftkey or Swype or whatever from the App store. Then go to settings, general, keyboard. There, you can select a new keyboard. You may have an option to “allow full access” … do that.

There you go.


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