Super predators and mass extinctions
...ity) constructed a numerical model of many species competing for both food and living space. The model also included a term that controls mutation rates, allowing new species to develop over time. The model shows that, much of time, the system is populated with "medium efficiency" predators whose numbers fluct...New lab technique identifies high levels of pathogens in therapy pool
...st. The hydrogen peroxide also eliminated microbes competing with "Mycobacterium avium," they reported. Health inspectors typically capture and culture microorganisms found in such environments to assess the number of pathogen species, an approach that misses many airborne bacteria that are difficult to grow ...Low level of extinction during ice age linked to adaptability
...es, and thus did not survive," he said. "The other competing hypothesis is that large fluctuations of sea level, driven by the melting and reforming of glaciers, disrupted marine communities, and the ones which survived were those able to adjust. ...Iron exporter revealed that may explain common human disorder
...d K01 5 K01 DK64924-02 (A.D.). The authors have no competing financial interests. ### Adriana Donovan, Christine A. Lima, Jack L. Pinkus, Geraldine S. Pinkus, Leonard I. Zon, Sylvie Robine, and Nancy C. Andrews: "The iron exporter ferroportin/Slc40a1 is essential for iron homeostasis" Publishing in Cell Met...