World AIDS Day, Tuesday Dec. 1

Looking ahead to World AIDS Day, skim a bit of this book in the OhioLINK ELectronic Book Center: Denying AIDS : Conspiracy Theories, Pseudoscience, and Human Tragedy / Seth C. Kalichman, Foreword by Nicoli Nattrass. Copernicus Books, an imprint of Springer, 2009. The introduction includes this observation:

"Denialism – like stigma, sexism, and homophobia – undermines the fight against AIDS. At the very least, denialism diverts attention and resources from the global AIDS disaster. At its worst, it disinforms affected populations about the importance of prevention, the necessity of HIV testing, and the availability of life-prolonging treatments. At its core, denialism is destructive because it undermines trust in science, medicine, and public health."

AIDS denialism should not be dismissed as the baseless opinion of a small, misinformed minority. Kalichman stresses that the rhetoric of denialism is quite harmful, especially to those who are HIV-positive:

"There are now countless HIV infected people who have avoided getting tested for HIV, rejected their HIV positive test results, ignored safer sex practices, failed to disclose their HIV status to sex partners, and refused HIV treatments for themselves and their children because they have believed denialists. Health decisions that are disinformed by denialist rhetoric are why we must care about denialism."

Be informed. Rely on factual sources, based on expert peer-reviewed medical research.
HIV Facts from:

• Centers for Disease Control and Prevention
• National Aids Trust (UK)

UN Climate Change Conference in Copenhangen: Prospects for Progress?

Living on Earth's Steve Curwood chatted with U.N. Foundation President, Tim Wirth, a former U.S. Senator and Under-Secretary of State for Global Affairs, as the Copenhangen Conference looms closer. Wirth stressed the urgency of the global warming, and the opportunity for China-US relations to make the biggest contribution worldwide in reducing carbon emissions saying, "we're the biggest developed world, they're the biggest developing country; between the two of us we have about 50 percent of the world's carbon emissions. So, if we can figure out together a joint program for moving toward a greener and ultimately low-carbon economy, then we have an opportunity together to really salvage the world."

Listen to the entire interview or read the transcript online.

COP15 Copenhagen. Denmark's host country web site on the convention.
CleanSkies.com news on the Copenhagen conference.

Post-Thanksgiving Afternoon of Reading: Great Shopping Alternative!

The library is open a few hours this fine day after Thanksgiving, from 1-4:30 pm only. Spend a few hours catching up on reading, with very little competition for the required texts on reserve, or take advantage of easy access to one of the many computers in the library. There is plenty of space in the window seats overlooking north campus, where the first real hint of winter has finally arrived. Enjoy the quiet before heading into the home stretch of the semester. Thank you, Cordelia, for keeping the library open today! May at least one printer work flawlessly all afternoon and through the weekend.

150th Anniversary Today! Darwin's On the Origin of Species

It has been a year of celebration and remembrance of Charles Darwin (born 200 years ago last February 12) and his pivotal work, On the origin of species by means of natural selection... but this is THE day! November 24, 1859, marked the beginning of a great new direction in the understanding of natural history, despite resistance to the implications for human origins that continues today.

The library's copy of an early edition is in Special Collections, but there many facsimiles and later editions to browse in the science library, including volumes 15 and 16 of Charles Darwin's Works.

On our new book shelf is one of the many books purchased this year that relate to Darwin directly or evolution more generally: The Origin then and now: an interpretive guide to the Origin of Species. Author David Reznick's begins his preface with: "Darwin's Origin of Species has been described as one of the books that is most widely referred to, but least likely to be read." You can buck that trend and read at least a bit of Origin at the Darwin Online site, or peruse the Darwin Correspondence project to commemorate the day, and enjoy letters between Darwin and his publisher John Murray.

Deconstructing Global Warming: Richard Lindzen on Campus

If you are unaware of MIT Professor Richard Lindzen's role in the community of climate change skeptics, this New York Times story [March 8, 2009] on the 2009 International Conference on Climate Change is a good introduction. Skeptics Dispute Climate Worries and Each Other, by Andrew Revkin, included these paragraphs:

• In a keynote talk Sunday night, Richard S. Lindzen, a professor at M.I.T. and a longtime skeptic of the mainstream consensus that global warming poses a danger, first delivered a biting attack on what he called the “climate alarm movement.”
• There is no solid scientific evidence to back up the models used by climate scientists who warn of dire consequences if warming continues, he said. But Dr. Lindzen also criticized widely publicized assertions by other skeptics that variations in the sun were driving temperature changes in recent decades. To attribute short-term variation in temperatures to a single cause, whether human-generated gases or something else, is erroneous, he said.
• But several climate scientists who are seeking to curb greenhouse gases strongly criticized the meeting. Stephen H. Schneider, a climatologist at Stanford University and an author of many reports by the intergovernmental climate panel, said, after reviewing the text of presentations for the Heartland meeting, that they were efforts to “bamboozle the innocent.”

The Third International Conference on Climate Change sponsored by the Heartland Institute, took place June 2, 2009, in Washington, D.C., with the stated purpose "to expose Congressional staff and journalists to leading scientists and economists in the nation’s capital." Proceedings of that conference online include Professor Lindzen's keynote address (with options for PowerPoint, pdf, audio, and video).

LogicalScience.com counters Professor Lindzen here.

Recent Publications, Science Faculty & Students

New publications by Oberlin College science faculty and students include the following:

Murphy, Troy G., Malcolm F. Rosenthal, Robert Montgomerie, and Tarvin, Keith A. 2009. Female American goldfinches use carotenoid-based bill coloration to signal status. Behavioral Ecology 20: 1348-1355.

Download the pdf at the publisher's site. It will also be loaded on the OhioLINK Electronic Journal Center in the near future.

Scofield, John H. 2009. Do LEED-certified buildings save energy? not really ... Energy and Buildings 41, (12) (DEC): 1386-90. [full-text at OhioLINK EJC).

Minerath, Emily C., Madeline P. Schultz, and Matthew J. Elrod. 2009. Kinetics of the reactions of isoprene-derived epoxides in model tropospheric aerosol solutions. Environmental Science & Technology 43, (21) (NOV 1): 8133-9. [full-text at publisher's site]

Oertel, Catherine M., Shefford P. Baker, Annika Niklasson, Lars-Gunnar Johansson, and Jan-Erik Svensson. 2009. Acetic acid vapor corrosion of lead-tin alloys containing 3.4 and 15% tin. Journal of the Electrochemical Society 156, (12) (OCT): C414-21. [no full-text online access for Oberlin users; read the abstract]

Find more recent publications by science faculty and students by searching for "oberlin college" as an address in Web of Science, limiting to publication year 2009 and the database Science Citation Index.

Was T-Rex Hot Blooded? PLoS ONE News

PLoS ONE published this article online on November 11, 2009:

Pontzer H, Allen V, Hutchinson JR, 2009 Biomechanics of Running Indicates Endothermy in Bipedal Dinosaurs. PLoS ONE 4(11): e7783. doi:10.1371/journal.pone.0007783

It has been viewed nearly 1900 times in two days, and downloaded 450 times as of this moment. Open access has obviously benefited a great number of readers interested in this topic!

Here's a bit from the authors' methodology and results summary:

"Here we describe two new biomechanical approaches for reconstructing the metabolic rate of 14 extinct bipedal dinosauriforms during walking and running. These methods, well validated for extant animals, indicate that during walking and slow running the metabolic rate of at least the larger extinct dinosaurs exceeded the maximum aerobic capabilities of modern ectotherms, falling instead within the range of modern birds and mammals... Our results support the hypothesis that endothermy was widespread in at least larger non-avian dinosaurs. It was plausibly ancestral for all dinosauriforms (perhaps Ornithodira), but this is perhaps more strongly indicated by high growth rates than by locomotor costs."

Read Peter Ward's Out of Thin Air for a helpful review (as of 2006) of the evolution of endothermy, and access a very brief discussion of dinosaur endothermy written for the general public at the University of California Museum of Paleontology DinoBuzz.