We tested popular wideband O₂ controllers against lab-grade equipment to see how accurate their lambda readings really are under real engine conditions.

Corin Cesaric is a Flex Editor at CNET. She received her bachelor's degree in journalism from the University of Missouri-Columbia. Before joining CNET, she covered crime at People Magazine and ...

A simple new sensor can determine exactly how fresh fish is in less than two minutes. To determine the freshness of a piece of fish, cooks traditionally look at its eyes and gills or give it a sniff.