The system is built upon four foundational pillars: Autonomous Safety: Utilizing MQ-series gas sensors and flame detectors to provide real-time protection against fire and gas leaks through automated ...

Retail giant Wal-Mart will pay Pima County $35 million for the right to build a Supercenter southwest of Tucson, at Ajo Way and Kinney Road. The $35 million — an estimated 2 percent of the store's ...