Major fires continue to burn in Arizona and across Canada, impacting the air quality for millions of people. An air purifier can help, but it depends on the filter.

AUSTIN, Texas — Heavy rain returned to the Hill Country from Saturday night into Sunday morning, dropping over 6 inches in parts of Llano and Burnet counties. A rare Flash Flood Emergency was ...

In the design and practical application of highspeed permanent magnet synchronous machine (HSPMSM), there is a multi-parameter, strongly coupled relationship between the machine and the drive. Drive ...