Background Predicting progression to aortic valve replacement (AVR) in moderate aortic stenosis (AS) is challenging. This ...

Discover how to build a multi-stage water siphoning and vortex device using repurposed plastic bottles and simple household items. Watch water flow through homemade channels as captivating vortices ...

Late last year, astronomers detected the sixth known dark vortex on Neptune. This time, however, scientists were able to chronicle the formation of this swirling storm over the course of several years ...

After seeing several dark vortexes appear in the ice giant's clouds over the decades, scientists have finally been able to watch one form, and it was a big one. Share on Facebook (opens in a new ...