Zello has become a popular app in the wake of Hurricanes Harvey and Irma, shooting to the number one spot on iTunes. The app has gained popularity for its ability to connect with people without phone ...

Hurricane Harvey rescuers turned to walkie-talkie app Zello while working to save thousands trapped by floodwaters last week. As Hurricane Irma runs through the Caribbean and approaches Florida, ...

After years of living in an area with no cell service -- but with a very active radio tower -- I grew accustomed to talking with my husband using a ham radio instead of text messaging. Now that cell ...

Technology has been a huge factor in some of the big protest movements over the past couple of years — think Twitter and Instagram in Tunisia, Iran, and Egypt, or Facebook in Brazil. A new app joined ...

Linda Wertheimer talks to Patrick Tucker, the technology editor for Defense One, about Zello — a walkie-talkie app. That app is becoming a key tool for protesters in Ukraine and Venezuela. From ...