We tested the best hand-crank radios to find out which ones could help you stay prepared in emergencies. In addition to our ...

Shawn Dahl with NOAA’s Space Weather Prediction Center said an ... week's solar storms for possible minor disruptions to high-frequency radio communications, which are used by airlines and ...

They have developed a non-invasive radio frequency (RF)-based system capable of monitoring heart rate variability (HRV) with clinical-grade accuracy over extended periods. This research is ...