Optical vortex plays an important role in a variety of fields, such as particle tweezing, quantum communication, astrophysics, and microscopy. Especially, the application of optical vortex has been ...

CHICAGO — The polar vortex is back and the forecasts are dire: A quick punch of snow, followed almost immediately by a life-threatening level of cold that a generation of Midwesterners has never ...

If you can predict the path of the jet stream, the upper atmosphere's undulating river of wind, then you can predict weather -- not just for a week or two, but for an entire season. A new study moves ...