ScienceDaily: Top Science News |
- Climate change could cripple southwestern U.S. forests: Trees face rising drought stress and mortality as climate warms
- Novel pathogen epidemic identified in sub-Saharan Africa: Spread of human invasive non-Typhoidal Salmonella tracked
- White shark diets show surprising variability, vary with age and among individuals
| Posted: 30 Sep 2012 11:21 AM PDT Combine the tree-ring growth record with historical information, climate records, and computer-model projections of future climate trends, and you get a grim picture for the future of trees in the southwestern United States, according to a new study.  |
| Posted: 30 Sep 2012 11:15 AM PDT Researchers have found that the spread of a dangerous bacteria that can be fatal in up to 45% of people infected in sub-Sahara Africa may have been instigated by the emergence and spread of HIV in Africa. The study also found that one of the major contributing factors for the successful spread of the disease – non-Typhoidal Salmonella (iNTS) – was the acquisition of genes that afford resistance to several front line drugs used to treat blood-borne infection such as iNTS.  |
| White shark diets show surprising variability, vary with age and among individuals Posted: 29 Sep 2012 11:02 AM PDT White sharks, the largest predatory sharks in the ocean, are thought of as apex predators that feed primarily on seals and sea lions. But a new study shows surprising variability in the dietary preferences of individual sharks.  |
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