In the western American state of Utah, drone aircraft are flying near avalanches to watch snow crashing down from mountains.
Drones are also being used in the southeastern United States. For example, in North Carolina, they are searching for endangered birds and the places they use to raise their young.
Public transportation agencies are using drones in nearly every state. That information comes the American Association of State Highway and Transportation Officials, or AASHTO …
VOA | May 26, 2019