Most of the US will enjoy milder temperatures on Thursday, but the warmup will be brief as a polar vortex will send temperatures tumbling below freezing for most of the nation starting this ...

The smoke circles, known as volcanic vortex rings, are actually made of condensed gases and water vapour. They form when gases rise up from deep below the earth and escape inside the crater of a ...

The 34.4 meter high (that is 37.2 yards to those metrically challenged) vortex was not designed as an attraction, but to channel smoke out of the building in the event of a fire. The architecture ...