One of the most southerly populations of polar bears in the world – and the best studied – is struggling to cope with climate-induced changes to sea ice, new research reveals. Based on over 10 years’ data the study, published in the British Ecological Society‘s Journal of Animal Ecology, sheds new light on how sea ice conditions drive polar bears’ annual migration on and off the ice.
Led by Dr. Seth Cherry of the University of Alberta, the team studied polar bears in western Hudson Bay, where sea ice melts completely each summer and typically re-freezes from late November to early December. “This poses an interesting challenge for a species that has evolved as a highly efficient predator of ice-associated seals,” he explains. “Because although polar bears are excellent swimmers compared with other bear species, they use the sea ice to travel, hunt, mate and rest.”
Caption from EurekAlert: An adult female polar bear wearing a GPS-satellite linked collar with her two 10-month-old cubs waits for the sea ice to re-form onshore in western Hudson Bay, Manitoba, Canada. Photo Copyright Andrew Derocher, Univeristy of Alberta.
Polar bears have adapted to the annual loss of sea ice by migrating onto land each summer. While there, they cannot hunt seals and must rely on fat reserves to see them through until the ice returns.
Dr. Cherry and colleagues wanted to discover how earlier thawing and later freezing of sea ice affects the bears’ migration. “At first glance, sea ice may look like a barren, uniform environment, but in reality, it’s remarkably complex and polar bears manage to cope, and even thrive, in a habitat that moves beneath their feet and even disappears for part of the year. This is an extraordinary biological feat and biologist still don’t fully understand it,” he says.
From 1991-97 and 2004-09, they monitored movements of 109 female polar bears fitted with satellite tracking collars. They tagged only females because males’ necks are wider than their heads, so they cannot wear a collar. During the same period, the team also monitored the position and concentration of sea ice using satellite images.
“Defining precisely what aspects of sea ice break-up and freeze-up affect polar bear migration, and when these conditions occur, is a vital part of monitoring how potential climate-induced changes to sea ice freeze-thaw cycles may affect the bears,” he says.
The results reveal the timing of polar bears’ migration can be predicted by how fast the sea ice melts and freezes, and by when specific sea ice concentrations occur within a given area of Hudson Bay.
According to Dr. Cherry: “The data suggest that in recent years, polar bears are arriving on shore earlier in the summer and leaving later in the autumn. These are precisely the kind of changes one would expect to see as a result of a warming climate and may help explain some other studies that are showing declines in body condition and cub production.”
Recent estimates put the western Hudson Bay polar bear population at around 900 individuals. The population has declined since the 1990s, as has the bears’ body condition and the number of cubs surviving to adulthood.
Caption from EurekAlert: This is a subadult polar bear on a lake on the shores of Hudson Bay in Manitoba, Canada in November waiting for the sea ice to re-form. Copyright Andrew Derocher, Univeristy of Alberta.
Because polar bears’ main food source is seals, and these are hunted almost exclusively on sea ice, the longer bears spend on land, the longer they must go without energy-rich seals. “Climate-induced changes that cause sea ice to melt earlier, form later, or both, likely affect the overall health of polar bears in the area. Ultimately, for polar bears, it’s survival of the fattest,” says Dr. Cherry.
He hopes the results will enable other scientists and wildlife managers to predict how potential climate-induced changes to sea ice freeze-thaw cycles will affect the ecology, particularly the migration patterns, of this iconic species.
###
Seth Cherry et al (2013). ‘Migration phenology and seasonal fidelity of an Arctic marine predator in relation to sea ice dynamics’, doi: 10.1111/1365-2656.12050, is published in the Journal of Animal Ecology on Wednesday 20 March 2013.
Starving polar bears. (loe.org) (This site has a good, but very sad, interview with Dr. Derocher; it also links to an audio of the Living On Earth radio program from which the interview is excerpted.)
Here is the complete press conference held today, July 4, 2012, at the CERN offices in Geneva, Switzerland. (Alas, the press conference was not held in Cedar Hill, Texas, making it a monument to the dangers of saying “we can’t be great in America any more” and refusing to appropriate money for science, or anything else good.)
This may be the biggest discovery of the decade for particle physics; it’s incredibly exciting, despite the appearance of calm. It may be the biggest discovery of the century. (We have 88 years left in the century, too.)
This is the full press conference update on the search for the Higgs boson at CERN in Geneva Switzerland. This press conference followed the 2-hour Seminar that you can see here: http://www.youtube.com/watch?v=JAlgX4FNiyM
This original CERN webcast recording was officially published at https://cdsweb.cern.ch/record/1459604 but I re-uploaded it here because YouTube is best. The CERN Copyright notice seems to say doing something like this may be ok http://copyright.web.cern.ch/ but if they release this video on the official http://youtube.com/cerntv YouTube channel, I may remove this copy from my YouTube account.
So, if the video above goes dark, check the official CERN YouTube site.
Especially for middle school and high school teachers, More:
If true, not only did GMU violate its own policies on duration, but on process, because they have ignored numerous well-documented complaints, including about 4 papers with Federal funding. This process involved VP Research Roger Stough, Provost Peter Stearns and President Alan Merten, so it was certainly visible inside GMU.
See No Evil,
Hear No Evil
Speak No Evil … except about Ray Bradley [the fellow who filed the plagiarism complaint], who has yet to receive any report.
The attached report enumerates the problems that GMU managed not to see, shows the chronology of a simple complaint that took almost 2X longer than specified by policy and finally produced an obvious contradiction. People may find GMU’s funding and connections interesting, including similarities and relationships with Heartland Institute. Finally, readers might recall the WR was alleged to be an attempt to mislead Congress, so this is not just an academic issue.
No e-mails stolen to expose the problem, but still no action against those who deny climate change occurs and will plagiarize papers to make their point. It’s a not-pretty pass.
I suspect reporters get MEGO syndrome reading the stuff, but Desmogblog points to real problems, real difficulties in science, that deserve to be covered better than they have been.
Understanding the physics of the Earth’s atmosphere poses great problems — it is an astonishingly dynamic, fluid environment. Understanding the relationships between species in ecosystems is no less complex, and no less vexing.
Wise followers of science recognize that when findings in biology, chemistry and physics, point the same direction, something powerful creates the convergence, and is not to be ignored.
So it is with these findings from the University of Montana and the U.S. Geological Survey, demonstrating clear links between climate change and the changing life patterns of large animals like elk, small animals like birds, and the plants the animals live in and consume. This study is so complex that climate denialists haven’t figured out which part to deny, yet. (This press release came out in January.)
From the USGS, with no adornment from the Bathtub, a press release on a letter in Nature Climate Change:
Dramatic Links Found Between Climate Change, Elk, Plants, and Birds
Released: 1/9/2012 11:30:00 AM
U.S. Department of the Interior, U.S. Geological Survey
Office of Communications and Publishing
In partnership with the University of Montana
Missoula, MT – Climate change in the form of reduced snowfall in mountains is causing powerful and cascading shifts in mountainous plant and bird communities through the increased ability of elk to stay at high elevations over winter and consume plants, according to a groundbreaking study in Nature Climate Change.
Red-faced warblers are one of the species affected by climate change in the form of reduced snowpack in the Arizona Mountains, according to a USGS Montana Cooperative Wildlife Research Unit study. Photo by Tom Martin, USGS, May 1998, in the Coconino National Forest
The U.S. Geological Survey and University of Montana study not only showed that the abundance of deciduous trees and their associated songbirds in mountainous Arizona have declined over the last 22 years as snowpack has declined, but it also experimentally demonstrated that declining snowfall indirectly affects plants and birds by enabling more winter browsing by elk. Increased winter browsing by elk results in trickle-down ecological effects such as lowering the quality of habitat for songbirds.
The authors, USGS Montana Cooperative Wildlife Research Unit scientist Thomas Martin and University of Montana scientist John Maron, mimicked the effects of more snow on limiting the ability of elk to browse on plants by excluding the animals from large, fenced areas. They compared bird and plant communities in these exclusion areas with nearby similar areas where elk had access, and found that, over the six years of the study, multi-decadal declines in plant and songbird populations were reversed in the areas where elk were prohibited from browsing.
Hermit thrushes are a songbird species that was strongly affected by plant community changes in mountains because of reduced snowpack and cascading ecological effects, according to a USGS Montana Cooperative Wildlife Research Unit study. 2005 photo by Tom Martin, USGS, in the Coconino National Forest
“This study illustrates that profound impacts of climate change on ecosystems arise over a time span of but two decades through unexplored feedbacks,” explained USGS director Marcia McNutt. “The significance lies in the fact that humans and our economy are at the end of the same chain of cascading consequences.”
The study demonstrates a classic ecological cascade, added Martin. For example, he said, from an elk’s perspective, less snow means an increased ability to freely browse on woody plants in winter in areas where they would not be inclined to forage in previous times due to high snowpack. Increased overwinter browsing led to a decline in deciduous trees, which reduced the number of birds that chose the habitat and increased predation on nests of those birds that did choose the habitat.
When elk are excluded, aspen growth dramatically increases - Climate change in the form of reduced snowfall in mountains is causing powerful and cascading shifts in montane plant and bird communities through the increased ability of elk to stay at high elevations over winter and consume plants. Here, you can see an example of the difference in aspen growth inside versus outside a fence that excludes elk. Photo by Tom Martin, USGS, in Coconino National Forest
“This study demonstrates that the indirect effects of climate on plant communities may be just as important as the effects of climate-change-induced mismatches between migrating birds and food abundance because plants, including trees, provide the habitat birds need to survive,” Martin said.
The study, Climate impacts on bird and plant communities from altered animal-plant interactions, was published online on Jan. 8 in the journal Nature Climate Change.
Elk in winter at Camp Creek Feed Ground, Northwestern Wyoming - USGS photo
This Anderson cartoon from the Houston Chronicle in 2009 gets the facts right, but sadly, is still accurate
Remember the pathetic, disgusting attempt to derail the climate talks in Durban, just a few days ago? The “climate skeptics”™ dumped a bunch more private e-mails from the scientists who work on climate. (Stolen e-mails, here; be prepared to be bored, with no smoking guns, no cold guns, no guns at all.)
Unless one thinks the self-proclaimed skeptics are James Bond nemesis enough to actually hope for the end of the world (as opposed to just being monumentally, stupidly misled), their train still can’t get back on the tracks. Revealing that someone among them has stolen more e-mails than previously known, didn’t help. Here is a list of just how bad the derailment has been for the denialists:
No great world-changing agreement, but theclimate talks in Durban, South Africa, produced a consensus that a massive treaty is not coming soon, and that action to save the planet can’t wait for guys in suits who defer by people like Ralph Hall to do the right thing. Generally, the comity at Durban is bad for the denialists — Christopher Monckton went into full panic mode, suggesting the language of the agreement available isn’t the whole story and something else — something sinister — is really going on. (One wonders how Monckton can stand to turn out the lights at night.) They can’t tell the difference between their burro and a burrow, and with Ralph Hall leading them they’re likely to find the edge of the cliff and leave it before they realize just how far up they are and how far they have to fall. (Skeptic/denialist Judith Curry carried a rundown of headlines from Durban, with links — remember her bias.)
Skeptics actually completed a research project and prepared it for publication. A group at Berkeley, with funding from conservative warming denialists like the Koch brothers, and featuring the work and cooperation of leading anti-science people like Anthony Watts, took on the challenge of looking at temperatures reported from weather stations, especially in the U.S., and especially those Anthony Watts had targeted as providing unduly warm and inaccurate readings that skewed all of the science of global warming. The not-loudly-mentioned target, of course, was the “hockey stick” graph. Alas for the skeptics, the Berkeley Earth Surface Temperature (BEST) study produced results that verify the accuracy of measurements that show warming, and which suggest the IPCC-published hockey stick is accurate enough that it deserves credence. Anthony Watts promptly disavowed all his own work on the project.
One question we need to be asking is why the incidents around the stolen e-mails are known as “Climategate” in the circles of warming denialists. The thieves in this case came from the ranks of the so-called skeptics, and the release of the e-mails was done on the blogs of those who deny warming, or human causation, or human ability to mitigate at all. (Fox News got it bass ackwards, of course — wondering whether the government is somehow complicit in hiding information, while all the information is public and almost all of the private communication is public. At Fox, they don’t even get Homer Simpson doh! moments of understanding — that’s how bad it is in Denialville.)
So far no one's listening to the bear on this one -- follow the money, and bring the criminals to justice.
It’s really SkepticGate, with a more-than two-year coverup and continuing, and the recent release is SkepticGate II.
Denialists, and even those who question global warming on legitimate grounds, must be frustrated. Nothing they do stops the world from warming. As the massive wave of evidence demonstrating the Earth warms and humans share the blame turns to a tsunami, even policy makers (Ralph Hall excepted) look for solutions to warming problems. It’s so bad for the skeptics that even the old trick of stealing e-mails from the scientists, the trick that helped fog up the Copenhagen proceedings, did almost nothing to the Durban talks. While no treaty came out, none was expected — but the sudden action in the last couple of days of the conference to get action despite the continued interference by climate skeptics and their political allies, must have caught them off guard.
Two years ago warming denialists claimed the Earth is actually cooling, and they predicted dramatic cooling by late 2010.
Instead, warming continues, overcoming the temporary mediation caused by increased particulate and sulfate emissions from coal burned in uncontrolled fashion in China, as evidence by things like the continued shrinking of Arctic ice below 20th century averages. See this press release from NASA:
WASHINGTON — Last month the extent of sea ice covering the Arctic Ocean declined to the second-lowest extent on record. Satellite data from NASA and the NASA-supported National Snow and Ice Data Center (NSIDC) at the University of Colorado in Boulder showed that the summertime sea ice cover narrowly avoided a new record low.
The Arctic ice cap grows each winter as the sun sets for several months and shrinks each summer as the sun rises higher in the northern sky. Each year the Arctic sea ice reaches its annual minimum extent in September. It hit a record low in 2007.
The near-record ice-melt followed higher-than-average summer temperatures, but without the unusual weather conditions that contributed to the extreme melt of 2007. “Atmospheric and oceanic conditions were not as conducive to ice loss this year, but the melt still neared 2007 levels,” said NSIDC scientist Walt Meier. “This probably reflects loss of multiyear ice in the Beaufort and Chukchi seas as well as other factors that are making the ice more vulnerable.”
Joey Comiso, senior scientist at NASA’s Goddard Space Flight Center in Greenbelt, Md., said the continued low minimum sea ice levels fits into the large-scale decline pattern that scientists have watched unfold over the past three decades.
“The sea ice is not only declining, the pace of the decline is becoming more drastic,” Comiso said. “The older, thicker ice is declining faster than the rest, making for a more vulnerable perennial ice cover.”
While the sea ice extent did not dip below the 2007 record, the sea ice area as measured by the microwave radiometer on NASA’s Aqua satellite did drop slightly lower than 2007 levels for about 10 days in early September, Comiso said. Sea ice “area” differs from extent in that it equals the actual surface area covered by ice, while extent includes any area where ice covers at least 15 percent of the ocean.
Arctic sea ice extent on Sept. 9, the lowest point this year, was 4.33 million square kilometers (1.67 million square miles). Averaged over the month of September, ice extent was 4.61 million square kilometers (1.78 million square miles). This places 2011 as the second lowest ice extent both for the daily minimum extent and the monthly average. Ice extent was 2.43 million square kilometers (938,000 square miles) below the 1979 to 2000 average.
This summer’s low ice extent continued the downward trend seen over the last 30 years, which scientists attribute largely to warming temperatures caused by climate change. Data show that Arctic sea ice has been declining both in extent and thickness. Since 1979, September Arctic sea ice extent has declined by 12 percent per decade.
“The oldest and thickest ice in the Arctic continues to decline, especially in the Beaufort Sea and the Canada Basin,” NSIDC scientist Julienne Stroeve said. “This appears to be an important driver for the low sea ice conditions over the past few summers.”
Climate models have suggested that the Arctic could lose almost all of its summer ice cover by 2100, but in recent years, ice extent has declined faster than the models predicted.
NASA monitors and studies changing sea ice conditions in both the Arctic and Antarctic with a variety of spaceborne and airborne research capabilities. This month NASA resumes Operation IceBridge, a multi-year series of flights over sea ice and ice sheets at both poles. This fall’s campaign will be based out of Punta Arenas, Chile, and make flights over Antarctica. NASA also continues work toward launching ICESat-2 in 2016, which will continue its predecessor’s crucial laser altimetry observations of ice cover from space.
To see a NASA data visualization of the 2011 Arctic sea ice minimum as measured by the Advanced Microwave Scanning Radiometer – Earth Observing System (AMSR-E) on Aqua, visit:
Here is that visualization, presented by Cryosphere Program Manager, Tom Wagner:
On Sept. 9th, 2011, Arctic sea ice most likely hit its minimum extent for the year. On Sept. 20th, NASA’s Cryosphere Program Manager, Tom Wagner, shared his perspectives on the ice with television audiences across the country.
On the top of the world, a pulsing, shifting body of ice has profound effects on the weather and climate of the rest of the planet. Every winter as temperatures dip, sea ice freezes out of cold Arctic Ocean waters, and every summer the extent of that ice shrinks as warm ocean temperatures eat it away. Ice cover throughout the year can affect polar ecosystems, world-wide ocean currents, and even the heat budget of the Earth.
During the last 30 years we’ve been monitoring the ice with satellites, there has been a consistent downward trend, with less and less ice making it through the summer. The thickness of that ice has also diminished. In 2011 Arctic sea ice extent was its second smallest on record, opening up the fabled Northwest Passages and setting the stage for more years like this in the future. In this video, NASA’s Cryosphere Program Manager, Tom Wagner, shares his perspectives on the 2011 sea ice minimum.
On September 30th America’s biggest particle accelerator, the Tevatron at Fermilab near Chicago, will be switched off for good. Until the Large Hadron Collider (LHC) started smashing protons in earnest, the Tevatron was the fanciest bit of kit at physicists’ disposal. When it shuts down, America will have conceded the high-energy-physics game to Europe, whose CERN laboratory on the outskirts of Geneva is home to the LHC. Some American (and foreign) scientists are dismayed. Others hope that planned new experiments at Fermilab, which will be probing the strange behaviour of particles called neutrinos, will make up for the loss of the Tevatron. But the cost of these new projects, though less than the LHC’s, will still be counted in the billions of dollars. Is fundamental science worth that much money, especially in the current unfavourable economic climate? Should the United States be funding expensive projects with no obvious practical applications? Cast your vote and join the discussion.
Nature Notes #16 from the good people at Yosemite National Park: Sky Islands.
Throughout the Sierra Nevada, high flat plateaus are found at elevations around twelve and thirteen thousand feet. These isolated sky islands are the home to unique plant communities that are found nowhere else.
This is not a new idea by any stretch, that doing great things and dreaming great things to do is one of the things that makes America what it is, in its better incarnations.
Physicist Robert R. Wilson at the 1968 groundbreaking of Fermilab - Fermilab photo via Wikimedia
Physicist Robert Wilson — who had been the youngest group leader at Los Alamos on the Manhattan Project — gave a brilliant defense to a Congressional committee about the value of pure research, while working on the project that eventually became Fermilab. Wikipedia has a good, concise description of the event, and an account of Wilson’s words:
In 1967 he took a leave of absence from Cornell to assume directorship of the not-yet-created National Accelerator Laboratory which was to create the largest particle accelerator of its day at Batavia, Illinois. In 1969, Wilson was called to justify the multimillion-dollar machine to the Congressional Joint Committee on Atomic Energy. Bucking the trend of the day, Wilson emphasized it had nothing at all to do with national security, rather:
It has only to do with the respect with which we regard one another, the dignity of men, our love of culture. It has to do with: Are we good painters, good sculptors, great poets? I mean all the things we really venerate in our country and are patriotic about. It has nothing to do directly with defending our country except to make it worth defending.
Thanks to Wilson’s leadership—in a full-steam ahead style very much adopted from Lawrence, despite his firings—the facility was completed on time and under budget. Originally named the National Accelerator Laboratory, it was renamed the Fermi National Accelerator Laboratory (Fermilab for short) in 1974, after famed Italian physicist Enrico Fermi; the facility centered around a four-mile circumference, 400 GeV accelerator. Unlike most government facilities, Fermilab was designed to be aesthetically pleasing. Wilson wanted Fermilab to be an appealing place to work, believing that external harmony would encourage internal harmony as well, and labored personally to keep it from looking like a stereotypical “government lab”, playing a key role in its design and architecture. It had a restored prairie which served as a home to a herd of American Bisons, ponds, and a main building purposely reminiscent of a cathedral in Beauvais, France. Fermilab’s Central Laboratory building was later named Robert Rathbun Wilson Hall in his honor.
It’s time to dream, America. It’s time again to make America worth defending.
Too many in the U.S. bury their heads in the sands about the issues, but researchers in Spain and Mozambique wondered whether indoor residual spraying (IRS) with DDT, to fight malaria-carrying mosquitoes, might produce harms to children in those homes. They studied the issue in homes sprayed with DDT in Mozambique.
It turns out that young mothers ingest DDT and pass a significant amount of it to their children when the children breast feed.
Maria N. Manacaa, b, c, Joan O. Grimaltb, , , Jordi Sunyerd, e, Inacio Mandomandoa, f, Raquel Gonzaleza, c, e, Jahit Sacarlala, Carlota Dobañoa, c, e, Pedro L. Alonsoa, c, e and Clara Menendeza, c, e
a Centro de Investigação em Saúde da Manhiça (CISM), Maputo, Mozambique
b Institute of Environmental Assessment and Water Research (IDÆA-CSIC), Jordi Girona 18, 08034 Barcelona, Catalonia, Spain
c Barcelona Centre for International Health Research (CRESIB), Hospital Clínic, Universitat de Barcelona, Rosselló 132, 4a, 08036 Barcelona, Catalonia, Spain
d Centre for Research in Environmental Epidemiology (CREAL), Doctor Aiguader 88, 08003 Barcelona, Catalonia, Spain
e Ciber Epidemiología y Salud Pública, Spain
f Instituto Nacional de Saúde, Ministerio de Saúde, Maputo, Mozambique
Received 6 November 2010;
revised 19 March 2011;
accepted 1 June 2011.
Available online 20 July 2011.
Abstract
Breast milk concentrations of 4,4′-DDT and its related compounds were studied in samples collected in 2002 and 2006 from two populations of mothers in Manhiça, Mozambique. The 2006 samples were obtained several months after implementation of indoor residual spraying (IRS) with DDT for malaria vector control in dwellings and those from 2002 were taken as reference prior to DDT use. A significant increase in 4,4′-DDT and its main metabolite, 4,4′-DDE, was observed between the 2002 (median values 2.4 and 0.9 ng/ml, respectively) and the 2006 samples (7.3 and 2.6 ng/ml, respectively, p < 0.001 and 0.019, respectively). This observation identifies higher body burden intakes of these compounds in pregnant women already in these initial stages of the IRS program. The increase in both 4,4′-DDT and 4,4′-DDE suggest a rapid transformation of DDT into DDE after incorporation of the insecticide residues. The median baseline concentrations in breast milk in 2002 were low, and the median concentrations in 2006 (280 ng/g lipid) were still lower than in other world populations. However, the observed increases were not uniform and in some individuals high values (5100 ng/g lipid) were determined. Significant differences were found between the concentrations of DDT and related compounds in breast milk according to parity, with higher concentrations in primiparae than multiparae women. These differences overcome the age effect in DDT accumulation between the two groups and evidence that women transfer a significant proportion of their body burden of DDT and its metabolites to their infants.
Highlights
► DDT increases in pregnant women at the start of indoor spraying with this compound. ► Rapid transformation of DDT into DDE occurs in women after intake of this insecticide. ► The DDT increases in breast milk of women due to indoor spraying are not uniform. ► Breast milk DDT content in primiparae women is higher than in multiparae women. ► Women transfer a high proportion of their DDT and DDE body burden to their infants.
“Primiparae” women are those with one child, their first; “multiparae” women are those who have delivered more than one child.
Without having read the study, I suggest there are a few key points this research makes:
Claims that DDT has been “banned” from Africa and is not in use, are patently false.
Spraying poisons in homes cannot be considered to have no consequences; poisons in in very small concentrations get into the bodies of the people who live in those homes.
We should not cavalierly dismiss fears of harms to humans from DDT, because it appears that use of even tiny amounts of the stuff exposes our youngest and most vulnerable children.
Beating malaria has no easy, simple formula.
Women, even poor women in malaria-endemic areas, should not have to worry about passing poisonous DDT or its breakdown products to their children, through breastfeeding. The national Academy of Sciences was right in 1970: DDT use should be stopped, and work should be hurried to find alternatives to DDT.
From my earlier post on the Texas Tribune interview with Michael Marder, in which he questioned the assumptions that monkeying with teacher discipline, accountability, pay, training, vacations, or anything else, can produce better results in educating students, especially students from impoverished backgrounds.
Marder is the director of the University of Texas’s program to encourage much better prepared teachers, UTeach.
Michael Marder’s numbers show that it’s not the teachers’ fault that so many students are not ready for college, and not learning the stuff we think they should know.
Texas Tribune said:
In the popular 2010 documentary Waiting for Superman, former DC schools chancellor Michelle Rhee said, “But even in the toughest of neighborhoods and circumstances, children excel when the right adults are doing the right things for them.”
After looking at the data, Marder has yet to be convinced that any teaching solution has been found that can overcome the detrimental effects of poverty on a large scale — and that we may be looking for solutions in the wrong place.
[Reeve] Hamilton’s interview of Marder takes up three YouTube segments — you should watch all three.
For the record, Michelle Rhee is probably right: In the toughest neighborhoods, children excel when the right adults do the right things for them. But the right adults usually are parents, and the right things include reading to the children from about 12 months on, and pushing them to love learning and love books. Teachers get the kids too late, generally, to bend those no-longer-twigs back to a proper inclination. The government interventions required to boost school performance must come outside the classroom. Michelle Rhee’s great failure — still — is in her tendency not to recognize that classroom performance of a student has its foundations and live roots in the homes and neighborhoods who send the children to school every day.
Mr. Johnson says that most of the people responding have been conservatives. This is fine as far as that goes, but they’d like to balance it out so the survey is more representative of the full electorate.
The survey should take between about 15 – 20 minutes to complete.
You might also wish to consider passing along the link to the survey on Facebook or Twitter.
Thank you.
Don’t hope that your assisting with Dr. Johnson’s research will improve the writing or accuracy of anything you get on line, though. It’s research, not miracle working.
NOAA's Mauna Loa Observatory, from NOAA At the Ends of the Earth Collection, 1982 NOAA photo by Commander John Bortniak
John Adams observed, and Ronald Reagan was fond of quoting, “Facts are stubborn things . . .”
Here are the facts on atmospheric carbon dioxide (CO2):
Mauna Loa Observatory, Scripps Institution of Oceanography, UCSD (University of Calfornia-San Diego); CO2 concentrations in parts per million (ppm)
As described at the Scripps Institution of Oceanography site:
Description:
Monthly average atmospheric carbon dioxide concentration versus time at Mauna Loa Observatory, Hawaii (20°N, 156°W) where CO2 concentration is in parts per million in the mole fraction (p.p.m.). The curve is a fit to the data based on a stiff spline plus a 4 harmonic fit to the seasonal cycle with a linear gain factor.
Data from Scripps CO2 Program.
For perspective, here’s a chart from Scripps that shows why there is concern over current levels of CO2:
CO2 over the past 420,000 years - Scripps Institution of Oceanography
Want solid information on climate change (global warming) and the problems it poses?
Several opportunities present themselves, from the National Academies of Science, America’s premiere science advisory group:
America’s Climate Choices Final Report in Review
The final report of the America’s Climate Choices suite of studies is in the final stages of peer review and will be released this Spring. An official release date will be announced as soon as possible. The report is authored by the Committee on America’s Climate Choices, which was responsible for providing overall direction, coordination, and integration of the America’s Climate Choices activities.
Warming World, a publication from the National Academies of Science
“Warming World: Impacts by Degree” Explains Findings of NRC Report
Emissions of carbon dioxide from the burning of fossil fuels have ushered in a new epoch, beginning to be called the Anthropocene, during which human activities will largely determine the evolution of Earth’s climate. That’s one of the main conclusions from Climate Stabilization Targets: Emissions, Concentrations, and Impacts over Decades to Millennia (NRC, 2011) an expert consensus report released last July and published this year. Now a new 36-page booklet based on the report, “Warming World: Impacts by Degree” is available to help policymakers, students, and the general public better understand the report’s important conclusions.
The report concludes that, because carbon dioxide is so long-lived in the atmosphere, increases in this gas can effectively lock the Earth and many future generations in a range of impacts, some of which could be severe. Therefore, emission reduction choices made today matter in determining impacts that will be experienced not just over the next few decades, but also into the coming centuries and millennia. Policy choices can be informed by recent advances in climate science that show the relationships among increasing carbon dioxide, global warming, related physical changes, and resulting impacts. The report identifies (and quantifies when possible) expected impacts per degree of warming, including those on streamflow, wildfires, crop productivity, the frequency of very hot summers, and sea-level rise and its associated risks and vulnerabilities.
Report Sets Research Agenda to Study Earth’s Past Climate
Without a reduction in emissions, by the end of this century atmospheric carbon dioxide could reach levels that Earth has not experienced for more than 30 million years. Critical insights into how Earth’s atmosphere, oceans, and ecosystems would function in this high carbon dioxide environment are contained in the records of Earth’s geological past, concludes Understanding Earth’s Deep Past: Lessons for Our Climate Future, a National Research Council report from the Board on Earth Sciences that was released on March 1, 2011.
“Ancient rocks and sediments hold the only records of major, and at times rapid, transitions across climate states and offer the potential for a much better understanding of the long-term impact of climate change,” said Isabel Montañez, chair of the committee that wrote the report and a professor in the department of geology at the University of California, Davis. The research could also yield information on the tipping points for climate change–the threshold of greenhouse gas accumulation in the atmosphere at which abrupt climate change will occur.
The report sets out a research agenda for an improved understanding of Earth system processes during the transition to a warmer world. High-priority research initiatives include gaining a better understanding of the sensitivity of climate to increased atmospheric carbon dioxide, the amount of sea-level rise as the ice sheets melt, and the resilience of ecosystems to climate change.
Webinar on Transportation and Climate Change
On Thursday, March 24 from 2:00-3:00 p.m., the National Academies Transportation Research Board will host the first of a 2-part webinar series that looks the threats of climate change to transportation facilities and operations and at resources for adapting. The cost of the webinar is $109 (the webinars are free to employees of TRB sponsors). To sign up and/or to learn more, please visit http://www.trb.org/ElectronicSessions/Blurbs/164935.aspx.
(Yeah, I know — it’s not big. Click the image, go see a bigger version at Wilkins’s site.)
Wilkins added:
Kruger, J., & Dunning, D. (1999). Unskilled and unaware of it: How difficulties in recognizing one’s own incompetence lead to inflated self-assessments. Journal of Personality and Social Psychology, 77 (6), 1121-1134 DOI: 10.1037/0022-3514.77.6.1121
RT @TeacherSabrina: .@slekar The chutzpah evident in their attempts to play underdog are dwarfed only by the obscene effects of their polic…Splashed: 1 hour ago
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RT @bannerite: MT @seriousfun8309
I am sensitive to, & understanding of, the Union Thugs who threw themselves on students to protect them …Splashed: 1 hour ago
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We've been soaking in the Bathtub for several months, long enough that some of the links we've used have gone to the Great Internet in the Sky.
If you find a dead link, please leave a comment to that post, and tell us what link has expired.
Thanks!
Posted by Ed Darrell 
