This story has been edited to correct an error. Judah Cohen is affiliated with the Massachusetts Institute of Technology. Our old wintertime friend the polar vortex ...

Polar has started rolling out Polar OS 5, the next major firmware update for its range of GPS sports watches, bringing a host of usability and training improvements. These include multiple alarms, ...

Forecasters say that the polar vortex will usher in waves of frigid air across parts of the U.S. through January. The "more active polar vortex will drive colder air and snow across the central and ...

Farewell to the January thaw. A fierce Arctic blast of bitterly cold air is poised to overtake much of the central, eastern and southern U.S. over the next few days, dropping temperatures well below ...

Vanessa is a lead writer at CNET, reviewing and writing about the latest smartwatches and fitness trackers. She joined the brand first as an on-camera reporter for CNET's Spanish-language site, then ...