Monthly Archives: May 2012

A tiny study hints that a single intravenous infusion of ketamine may alleviate bipolar depression for 3 days 0

Citation Carlos A. Zarate Jr., Nancy E. Brutsche, Lobna Ibrahim, Jose Franco-Chaves, Nancy Diazgranados, Anibal Cravchik, Jessica Selter, Craig A. Marquardt, Victoria Liberty, and David A. Luckenbaugh, Replication of Ketamine’s Antidepressant Efficacy in Bipolar Depression: A Randomized Controlled Add-On Trial, Biological Psychiatry 71(11): 939-946 (01 June 2012) If this eventually works out, it will be [...]

Bermuda-grass golf putting greens — mutations and the difficulty of keeping grass cultivars uniform 0

An occupation that one might not have anticipated as being economically important USDA Geneticist Karen Harris-Shultz — at the Crop Genetics and Breeding Research Unit in Tifton, Georgia — has developed ways of telling visually almost identical cultivars of Bermuda-grass apart by analyzing their DNA. Citation Karen R. Harris-Shultz, Brian M. Schwartz, and Jeff A. [...]

Untreated fever during pregnancy may double risk for autism — a small University of California at Davis retrospective study 0

Citation Ousseny Zerbo, Ana-Maria Iosif, Cheryl Walker, Sally Ozonoff, Robin L. Hansen, and Irva Hertz-Picciotto, Is Maternal Influenza or Fever During Pregnancy Associated with Autism or Developmental Delays? Results from the CHARGE (CHildhood Autism Risks from Genetics and Environment) Study, Journal of Autism and Developmental Disorders, doi: 10.1007/s10803-012-1540-x (online first, 05 May 2012) How this [...]

United States Geological Survey video shows the impressive ability of “light detection and ranging radar” (LIDAR) to penetrate vegetation and show geological faults — their example comes from Lake Tahoe, California 0

Citation Kevin Bazar, Sandra Bond, and Jim Howle, Using bare-earth LiDAR imagery to reveal the Tahoe – Sierra frontal fault zone Lake Tahoe, California, Unites States Geological Survey (17 May 2012) (with embedded video) The pointing finger The videographers went to the trouble to include a pointing finger icon in the video.  It traces the [...]

Significantly reduced volume of dense Antarctic bottom water appears to signal a potentially important aspect of climate warming — a press release from Australia 0

Citations Craig Macaulay, Latest Southern Ocean research shows continuing deep ocean change, CSIRO [Commonwealth Scientific and Industrial Organization] (18 May 2012) Steve Rintoul, Ship to shore: scientists return from Southern Ocean, CSIRO (18 May 2012) (MP3 podcast) (access via the above URL, the podcast link is on the right side of the page, under “Downloads”) [...]

Making it all up as we go along — the Max Planck Institute’s scientifically flawed revision of the global risk for catastrophic nuclear power radiation escapes — the group expects that contamination of more than 40 kilobecquerels per square meter will occur approximately every 50 years in Western Europe 0

Citation Jos Lelieveld, Daniel Kunkel, and Mark G. Lawrence, Global risk of radioactive fallout after major nuclear reactor accidents, Atmospheric Chemistry and Physics 12(9): 4245-4258, doi:10.5194/acp-12-4245-2012 (12 May 2012) Note A currently free version of the paper is here. Good science in aid of bad premises turns into poor predictions The above paper is a [...]

Methane seeps in the Arctic is not new news — but this tidbit about the Arctic methane supply is interesting 0

Citation Katey M. Walter Anthony, Peter Anthony, Guido Grosse, and  Jeffrey Chanton, Geologic methane seeps along boundaries of Arctic permafrost thaw and melting glaciers, Nature Geoscience, doi:10.1038/ngeo1480 (advance online publication, 20 May 2012) There is reportedly a whole lot more methane currently stored under frozen conditions in the Arctic than there is in the atmosphere [...]

Experiment measures the times that it takes an electron to quantum tunnel in and out of a helium atom and a carbon dioxide molecule — ingenious technique and excellent lay science writing 0

Citation — to the study Dror Shafir, Hadas Soifer, Barry D. Bruner, Michal Dagan, Yann Mairesse, Serguei Patchkovskii, Misha Yu. Ivanov, Olga Smirnova, and Nirit Dudovich, Resolving the time when an electron exits a tunnelling barrier, Nature 485(7398): 343–346(17 May 2012) doi:10.1038/nature11025 Citation — to Bob Yirka’s excellent lay explanation of how the study was [...]

Study suggests that trees sequester less carbon dioxide than climate models expected — by about 3 percent 0

Citation William L. Bauerle, Ram Oren, Danielle A. Way, Song S. Qian, Paul C. Stoy, Peter E. Thornton, Joseph D. Bowden, Forrest M. Hoffman, and Robert F. Reynolds, Photoperiodic regulation of the seasonal pattern of photosynthetic capacity and the implications for carbon cycling, Proceedings of the National Academy of Sciences [PNAS], doi: 10.1073/pnas.1119131109 (14 May [...]

NASA’s Interstellar Boundary Explorer (IBEX) shows that the expected bow shock at the outer edge of solar system’s heliosphere is not actually there — and Voyager 1 and 2’s continuing missions demonstrate that the heliopause is shaped differently than expected 0

Citation D. J. McComas, D. Alexashov, M. Bzowski, H. Fahr, J. Heerikhuisen, V. Izmodenov, M. A. Lee, E. Möbius, N. Pogorelov, N. A. Schwadron, and G. P. Zank, The Heliosphere’s Interstellar Interaction: No Bow Shock, Science Express, DOI: 10.1126/science.1221054 (10 May 2012) What is IBEX? NASA launched the Interstellar Boundary Explorer on 19 October 2008 [...]