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POPSUsing AI to find biomarkers of calorie restriction Novel artificial intelligence methodologies were applied to analyze gene expression microarray data gathered from mice under a calorie restriction (CR) regimen. The data were gathered from three previously published mouse studies; these datasets were merged together into a single composite dataset for the purpose of conducting a broader-based analysis. The result was a list of genes that are important for the impact of CR on lifespan, not necessarily in terms of their individual actions but in terms of their interactions with other genes. Furthermore, a map of gene interrelationships was provided, suggesting which intergene interactions are most important for the effect of CR on life extension.
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POPSEarth From Space: A Blooming North Sea MERIS acquired this image on 7 May 2008, working in Full Resolution mode to provide a spatial resolution of 300 m. Globally, phytoplankton are a major influence on the amount of carbon in the atmosphere, and hence need to be modelled into calculations of future climate change. Just like land-based plants, they accumulate carbon dioxide during photosynthesis and store it in their tissues, making them potentially important carbon sinks. To support ocean carbon cycle research, ESA's GlobColour project has merged 55 terabytes of data from three state-of-the-art instruments aboard different satellites, including MERIS, MODIS aboard NASA's Aqua and SeaWiFS aboard GeoEye's Orbview-2, to produce a 10-year dataset of global ocean colour stretching from 1997 to 2007. The ocean colour datasets are freely available to the public via the GlobColour website.
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POPSSocial Networking for Zebras Ecologists have turned to computer scientists to develop dynamic graphs of social behavior among Zebra populations, revealing why some are thriving while others are endangered: The difference showed that the Grevy's zebras tended to hang out in cliques, whereas the onagers spent time with different buddies on different days. The methods developed turn out to applicable to human networks, too: In the meantime, Berger-Wolf is testing her methods on other datasets, including the records of e-mails exchanged at Enron that became available after they were subpoenaed. She has found some surprising connections between the two kinds of networks. "We can see that our method to detect when a lion was in the area of zebras detects very well when the subpoena was issued at Enron," she says. When faced with a lion, the zebras flee and follow one lead zebra. Similarly, after the subpoena was issued, e-mail traffic to the lawyers increased dramatically.
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POPSBYOD: Bring Your Own Data This free software can take your data sets and put them into various types of graphs. I don't know much about it, but a teaching friend recommended that I look it over.
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POPSGlobal Warming? I guess the only remaining question anybody should have is. IS this caused by Human activity or just part of a normal cycle of the biosphere. I find it hard to believe that in the last 200 years Man has zero impact on the global temps.
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