Cleaning gutters can be time-consuming and tedious. Ryobi has a tool to blow out leaves and some consumers rave while other ...

Nine people were rescued from a house on the bank of the South Yuba River at Donner Summit Sunday after heavy rains led the stream to swell, cutting them off from the road, emergency officials said.

Abstract: In this note, we propose a supervisory control scheme that unifies the abilities of safety protection and safety extension. It produces a control that keeps the system safe indefinitely when ...