Studying crowd dynamics could inform strategies that help to prevent dense gatherings from becoming dangerous.

where the particles encountered a special laser beam. The beam was shaped like a swirling vortex of light and, as a result, ...

Antarctic sea ice drops to 'alarming low' for the third year in a row A massive vortex of ocean water encircling Antarctica, a swirling volume 100-times larger than all the world's rivers combined ...

The polar vortex, a swirling mass of cold air located over ... wind chill values to dip into the -5 to -15 range even with a light breeze. Wednesday will only see a slight gain in temperatures ...