Existing defect detection tools using ultrasound rely on phased array ultrasound. In this method, many transducers are pointed in the same direction to generate an image of that specific area. This ...

By reaching back to Maoist tactics of “rectification,” the Chinese leader is signaling that control over the gun requires a state of perpetual cleansing.

Tax relief and tax rebates are often confused. Learn how they differ, who qualifies and what each option can — and can’t — do for your taxes.