To be able to reproduce and become effective disease carriers, mosquitoes must first attain optimal body size and nutritional status. A pair of researchers at the University of California, Riverside, have succeeded in using CRISPR-Cas9, a powerful tool for altering DNA sequences and modifying gene function, to decrease mosquito body size, moving the research one step closer to eliminating mosquitoes that carry dengue fever and Zika virus.
A new collaborative study has investigated Arctic shrub-snow interactions to obtain a better understanding of the far north's tundra and vast permafrost system. Incorporating extensive in situ observations, Los Alamos National Laboratory scientists tested their theories with a novel 3D computer model and confirmed that shrubs can lead to significant degradation of the permafrost layer that has remained frozen for tens of thousands of years. These interactions are driving increases in discharges of fresh water into rivers, lakes and oceans.
A new study finds that over the past four decades, tornado frequency has increased over a large swath of the Midwest and Southeast and decreased in portions of the central and southern Great Plains, a region traditionally associated with Tornado Alley.
Samples of ancient sediments from a lake basin in East Africa have revealed that arid conditions developed in the area around half a million years ago, an environmental change that could have played a major role in human evolution and influenced advances in stone technology, according to an international research team that includes geologists from Georgia State University.
Scientists who performed the largest-ever genetic study of a puzzling type of adult-onset diabetes have uncovered new connections to the two major types of diabetes, offering intriguing insights into more accurate diagnosis and better treatment. Latent automimmune diabetes in adults (LADA) is a relatively common disorder that shares features of type 1 diabetes and type 2 diabetes.
'Exercise is a low-cost, non-invasive modality,' noted Dr. John DeLuca, 'so we are very interested in learning more about how activity results in these improvements. Rethinking how we view exercise in the long-term management of MS and other neurological conditions is our first step. We anticipate that the PRIMERS framework will accelerate advances in treatment by integrating the contributions from neuroscience, neurophysiology, and neurorehabilitation."
The architecture of each person's brain is unique, and differences may influence how quickly people can complete various cognitive tasks. But how neuroanatomy impacts performance is largely an open question. To learn more, scientists are developing a new tool -- computational models of the brain -- to simulate how the structure of the brain may impact brain activity and, ultimately, human behavior.
Scientists at Scripps Research have successfully tested a potential new smoking-cessation treatment in rodents.
Scientists at MIT have now identified a key mechanism, which they call the 'ice-ocean governor,' that controls how fast the Beaufort Gyre spins and how much fresh water it stores. In a paper published today in Geophysical Research Letters, the researchers report that the Arctic's ice cover essentially sets a speed limit on the gyre's spin.
New research reveals an unexpected benefit of large-scale offshore wind farms: the ability to lessen precipitation from hurricanes.