Massive extinctions of animals 45,000 to 55,000 years ago and the arrival of the first humans in ancient Australia may be linked, according to scientists at the Carnegie Institution, the University of Colorado and the Australian National University. Researchers analyzed ancient eggshells and wombat teeth to determine the diet and the environment of animals over […]
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Some People Genetically Predisposed To Tuberculosis
In the August issue of The American Journal of Human Genetics, Celia Greenwood and colleagues present evidence for a major genetic component to TB susceptibility. Tuberculosis (TB) is currently a major public health problem worldwide. Although there are millions of new cases of TB each year, not all individuals exposed to TB become infected, nor […]