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.

To see if a fish is fresh, people recommend looking at its eyes and gills or giving it a sniff. But a more accurate check for food quality and safety is to look for compounds that form when ...

The new Lab-on-a-Fish “Fitbit” tracks a fish’s location, heartbeat and tail beat, and even the temperature of the surrounding environment. A new fitness tracker for fish developed at the Pacific ...