Abstract: A bidirectional multibeam transmit-reflect-array (TRA) antenna has been proposed for the space–air–ground–sea integrated network (SAGSIN). The TRA consists of alternating transmission ...

Police officers used an unexpected and innovative method to rescue a family of deer in danger. By deploying a drone, officers carefully guided the deer away from harm and toward safety. The remarkable ...

With all of the holiday decorating, parties to attend, and gifts to buy, it's easy to let one thing slip your mind until a day or two before Christmas: stocking stuffers. And while they look cute all ...